Don’t worry, I never answer very quickly on Instagram, so no problem !

The spaces between punctuation throughout your writing are kind of distracting, but it could be a stylistic choice if you insist :P

TheA 40th year anniversary year is anis important step, no?

I agree with the other poster about "step"
You would say "40th anniversary year" if you're talking about the entire year. I think it's more common to talk about the anniversary day itself, so I corrected it just in case

How do you feel about that ?

Oh thanks !

I just look ated, we were following each other since 2021 !

Comma splice, but it's okay in casual conversation

I discovered you withrough/from your “money mouse” who I already love !

But all of your art is wonderlful, like a mix of strange, dark and fantasy.

All things I love !

The above if you're talking about the qualities of being "strange, dark, and fantasy," or "I love all of it!" if you're talking about the art

You learned to sculpture alone by yourself?

There is a nuance here. If you say "You learned to sculpt by yourself?" it implies that you already know or have a suspicion that it's true, and are just asking to confirm, or in this case, it sounds like you're impressed that they are so good at sculpting despite being self-taught.
If you ask "Did you learn to sculpt by yourself?" then it implies you have no idea whether they were self-taught or not

TheA 40th anniversary year is an important stepis a big deal, no?

don't need to say 'year'
and I think 'step' doesn't really work here because they are not intentionally doing something, it's just a celebration of years passing.

I just looked at, we werehave been following each other since 2021 !

I discovered you withfrom your “money mouse” who I already love !

But all of your art is wonderlful, it's like a mix of strange, dark and fantasy.

All I love it all !

YDid you learned sculpture aloneby yourself ?

Can also say "Did you learn sculpture on your own?"