There were many beautiful snow sculptures inat the festival venue. There were many beautiful snow sculptures at the festival venue.

There were many beautiful snow sculptures inat the festival venue. There were many beautiful snow sculptures at the festival venue.

"In" is grammatically fine, but sounds like you were indoors for this.

There were many beautiful snow sculptures inat the festival venue. There were many beautiful snow sculptures at the festival venue.

Some of them were huge, like five meters high. Some of them were huge, like five meters high.

Some of them were huge, like five meters high. Some of them were huge, like five meters high.

Some of them were huge, like five meters high. Some of them were huge, like five meters high.

Some of them were huge, like five meters high. Some of them were huge, like five meters high.

Some of them were huge, like five meters high. Some of them were huge, like five meters high.

There were also some anime character's’ sculptures like Jujutsu Kaisen, Haikyu, and Lucky Star. There were also some anime characters’ sculptures like Jujutsu Kaisen, Haikyu, and Lucky Star.

There were also some sculptures of anime character's sculptures like Jujutsu Kaisen, Haikyu, and Lucky Star. There were also some sculptures of anime characters like Jujutsu Kaisen, Haikyu, and Lucky Star.

There were also some anime character's’ sculptures like Jujutsu Kaisen, Haikyu, and Lucky Star. There were also some anime characters’ sculptures like Jujutsu Kaisen, Haikyu, and Lucky Star.

There were also some anime character's sculptures like Jujutsu Kaisen, Haikyu, and Lucky Star. There were also some anime character sculptures like Jujutsu Kaisen, Haikyu, and Lucky Star.

The temperature at night was around - 10 C. I was wearing a jacket, scarf and beanie, so I didn't really feel cold. The temperature at night was around -10 C. I was wearing a jacket, scarf and beanie, so I didn't really feel cold.

The temperature at night was around - 10 C. (degrees) C. I was wearing a jacket, scarf and beanie, so I didn't really feel cold. The temperature at night was around -10 (degrees) C. I was wearing a jacket, scarf and beanie, so I didn't really feel cold.

-10 C is also fine. I don't think there's an agreed upon way to format temperatures in English anyway. ^^;

The temperature at night was around - 10 C. I was wearing a jacket, scarf and beanie, so I didn't really feel the cold. The temperature at night was around - 10 C. I was wearing a jacket, scarf and beanie, so I didn't really feel the cold.

However, my face felt really cold because it was exposed ton the cold air. However, my face felt really cold because it was exposed to the cold air.

However, my face felt really cold because it was exposed ton the cold air. However, my face felt really cold because it was exposed to the cold air.

However, my face felt really cold because it was exposed ton the cold air. However, my face felt really cold because it was exposed to the cold air.

However, my face felt really cold because it was exposed ton the cold air. However, my face felt really cold because it was exposed to the cold air.

However, my face felt really cold because it was exposed ton the cold air. However, my face felt really cold because it was exposed to the cold air.

I went to the Sapporo Snow Festival. I went to the Sapporo Snow Festival.

I went to the Sapporo Snow Festival. I went to the Sapporo Snow Festival.

I went to the Sapporo Snow Festival. I went to the Sapporo Snow Festival.

I went to the Sapporo Snow Festival. I went to the Sapporo Snow Festival.

I went to the Sapporo Snow Festival. I went to the Sapporo Snow Festival.

I wrote about it in my last post and I'm going to write more about ithe continuation. I wrote about it in my last post and I'm going to write more about it.

I wrote about it in my last post and I'm going to continue writeing about the continuationit here. I wrote about it in my last post and I'm going to continue writing about it here.

I wrote about it in my last post and I'm going to write about /the continuation. I wrote about it in my last post and I'm going to write a/the continuation.

I wrote about it in my last post, and I'm going to write about the continuation.continue it here. I wrote about it in my last post, and I'm going to continue it here.

I would be appreciate it if you could help me to sound more natural, even if you have to change whole sentences. I would be appreciate it if you could help me sound more natural, even if you have to change whole sentences.

I would be appreciate if you could help me to sound more natural, even if you have to change whole sentences. I would be appreciate if you could help me to sound more natural, even if you have to change whole sentences.

I would be appreciate it if you could help me to sound more natural, even if you have to change whole sentences. I would be appreciate it if you could help me sound more natural, even if you have to change whole sentences.

Most of the sculptures were lit up at night, and there were also cool sound effect addings, so they were fantastic! Most of the sculptures were lit up at night, and there were also cool sound effects, so they were fantastic!

Most of the sculptures were lit up at night, and alsothey also had cool sound effect adding, sos. I thought that they were really fantastic! Most of the sculptures were lit up at night, and they also had cool sound effects. I thought that they were really fantastic!

Most of the sculptures were lit up at night, and alsowith cool sound effects addinged, so they were fantastic! Most of the sculptures were lit up at night, with cool sound effects added, so they were fantastic!

Or "..., and cool sound effects were added, so..."

Most of the sculptures were lit up at night, and alsohad cool sound effect addings, so they were fantastic! Most of the sculptures were lit up at night and had cool sound effects, so they were fantastic!

Most of the sculptures were lit up at night, and also had cool sound effects addinged, so they were fantastic! Most of the sculptures were lit up at night, and also had cool sound effects added, so they were fantastic!

Alternatively: Most of the sculptures were lit up at night, and had cool sound effects playing, so they were fantastic!

I wasn't able to write the last sentence well, so could you please change it to sound natural? I wasn't able to write the last sentence well, so could you please change it to sound natural?

Of course! The kind of sentence you wanted to make can be tricky to form because you have two ideas: "sculptures were lit up" and "sound effects were added." I tried to make it more natural.