One of the reason that I was so glad with it is that it wais a quality eyeliners with at a reasonable price. One reason I was so glad with it is that it is a quality eyeliner at a reasonable price.

Saying "it was a quality eyeliner" implies it no longer is a quality eyeliner.

One of the reasons that I was so gladhappy with it is that it was a quality eyeliners with a reasonable price. One of the reasons that I was so happy with it is that it was a quality eyeliner with a reasonable price.

We say "happy with," not "glad with."

In China, the price of import make up stuffed cosmetics is ridiculously high since authorities tend to impose substantial volume of tariffs on foreign cosmetics to protect home companies. In China, the price of imported cosmetics is ridiculously high since authorities tend to impose substantial tariffs on foreign cosmetics to protect home companies.

Consider "import duties" instead of "tariffs".

In China, the price of imported make up stuff is ridiculously high, since authorities tend to impose substantial volume of tariffs on foreign cosmetics to protect hdomestic companies. In China, the price of imported makeup is ridiculously high, since authorities tend to impose substantial tariffs on foreign cosmetics to protect domestic companies.

It was an eyeliner which can be applied on the bottom of my eyelashes to make my eyes look bigger and more attractive. It was an eyeliner which can be applied on the bottom of my eyelashes to make my eyes look bigger and more attractive.

Things I Bought and Felt Pleased aAbout Things I Bought and Felt Pleased About

If you are using title case, longer prepositions should also be capitalized.

I think it was some cosmetics stuff andthat I bought it on Taobao, which is aone of the most popular online shopping apps in cChina. I think it was some cosmetics that I bought on Taobao, one of the most popular online shopping apps in China.

We need a plural noun to use "one of", e.g. "one of the worst day*s* of my life" or "behind one of these door*s* is a million dollars in cash".

I think it was some cosmetics stuff andthat I bought it on Taobao, which is a mostvery popular online shopping app in cChina. I think it was some cosmetics that I bought on Taobao, which is a very popular online shopping app in China.

The phrase "a most + adj." exists, as in "it's a most wonderful time of year," but it tends to appear mostly in somewhat literary or dated styles of writing.

Therefore most people in China tend to cshoosep online shopping or countor rely on WecChat saellers who go abroad to buy stuff regularly and saleell it withat a lower price compared to physical stores. Therefore most people in China tend to shop online or rely on WeChat sellers who go abroad to buy stuff regularly and sell it at a lower price compared to physical stores.

Therefore, most people in China tend to choose online shopping or countrely on WecChat salers who go abroad to buy stuff regularly and saleell it withat lower prices compared to physical stores. Therefore, most people in China tend to choose online shopping or rely on WeChat salers who go abroad to buy stuff regularly and sell it at lower prices compared to physical stores.

On top of thatIndeed, I had a good shopping experience at that time. Indeed, I had a good shopping experience that time.

"On top of that" sounds like you're presenting an argument. "at that time" suggests a period of time found on a calendar or clock, whereas "that time" suggests a single instance

TI was impressed by how the online shop owner provided me with a thoughtful and passionate service which really impressed me. I was impressed by how the online shop owner provided thoughtful and passionate service.

"passionate" seems a bit out of place here (we might be "passionate" about a hobby, a sports team, a cause)... adjectives that would be more suitable here are: "knowledgeable", "competent", "attentive", "helpful"

The online shop owner provided me with a thoughtful and passiondedicated service, which really impressed me. The online shop owner provided me with thoughtful and dedicated service, which really impressed me.

I second the other corrector's comment about "passionate."

Most of all, Iit was respecially convenient. Most of all, it was especially convenient.

"really" is correct, but we're taught in school not to use such vague (unspecific) terminology.

Most of all, Iit was really convenient. Most of all, it was really convenient.

All I needed to do was easily click the stuff I wanted, put them into my shopping cart and paid moneymake the payment. All I needed to do was click the stuff I wanted, put them into my shopping cart and make the payment.

All I need to do was easily click the stuff I wandt, put ithem into my shopping cart and paid money. All I need to do was easily click the stuff I want, put it into my shopping cart and pay.

"Stuff" is generally singular.