I'm introducing about Japanese cultures.

These are explanations about April in Japan.
Could somebody correct these compositions?
I'm sorry, it's long X(

【Sakura】
It is a cherry blossom. We call it "Sakura".
Sakura is the national flower and it is very beautiful to see. In 1912, Japan presented 3,020 cherry trees to the U.S. as a symbol of friendship between the two countries. Sakura is associated with the beginning of the new academic year for school and the flowering time varies depending on the area. This year, Sakura came out(bloomed) from April 10th to 15th in Tokyo.

【Hanami】
Hanami is watching cherry blossoms and having lunch, snacks, dango, etc. Many people gather under the trees in full bloom. In a place famous for cherry blossoms, it is very crowded every year. Some people have booked a sheet(place or spot) where they can see a nice view of Sakura in advance.

【Hana yori dango】
It is a Japanese saying.
It means that a person who prefers to see Sakura and eat dango.
It is particularly said during the cherry-blossom viewing season.
Dango is a traditional Japanese sweet and is made from rice flour. I think that the most famous dango is "Mitarashi-dango", it tastes sweet and salty.

【Obento】
Obento means "lunch box".
It is a balanced meal that is packed compactly. We usually make it ourselves and take it to school, office and picnics and we can also get it at convenience stores.
Recenty "Charactor-Bento" is popular among children. It is made like animation characters with colored rice, seaweed and fish paste etc. I've tried it once, but it was difficult for me. I think making it needs special skills.

【Bonsai】
Bonsai is a traditional Japanese work of art. It takes a long time to cultivate and requires special skills and techniques. Usually it is enjoyed as a hobby among old people, however, small Bonsai is increasing rapidly among young people. Nowadays Bonsai is highly evaluated all over the world and in Italy, there is a university where people can learn about Bonsai and Bonsai museum.

This was really well written and taught me something about Japanese culture. Great job!

I'm introducing about Japanese cultures.
These are explanations about April in Japan.
Could somebody correct these compositions?
I'm sorry, it's long X(

【Sakura】
It is a cherry blossom. We're called it "Sakura".
Sakura is the national flower and it is very beautiful to see many. In 1912, Japan presented 3,020 cherry trees to the U.S. as a symbol of friendship between the two countries. Sakura is associated with the beginning of the new academic year for schools and the flowering budding time vary varies depending on the areas,. This year, Sakura came out in April 10th to 15th in Tokyo.

【Hanami】
Hanami that is watching the cherry blossoms and having lunch, snacks, dango, etc. Many people gather under the trees in full bloom. In a place famous for cherry blossoms it is very crowded every year. Some people have booked a sheet where they can see a nice view of Sakura in advance.

【Hana yori dango】
It is Japanese saying.
It means that a person who prefer see Sakura to and eat dango.
Particularly it is  said during the cherry blossom viewing season.
Dango is traditional Japanese sweets and made from rice flour. I think that the most famous dango is "Mitarashi-dango" the which tastes are is sweet and salty.

【Obento】
Obento means "lunch box".
It has is a balanced meal that is packed compactly. We usually make it and take it which made by ourself to school, the office, and picnics. and also We can also get it at convenience stores.
Recenty "Charactor-Bento" is in fashion among children. It is made like animation characters with colored rice, seaweed, and fish paste etc. I've tried it once, but it was difficult for me. I think it needs requires special skills I think.

【Bonsai】
Bonsai is a traditional Japanese work of art. (You might want to explain that it is a plant) It takes a long time to cultivate and require special skills and techniques. Usually it enjoyed as hobby among older people,. However, a little bonsai can increase rapidly among young people. Nowadays bonsai is highly evaluated all over the world and in Italy, there is a university that has a Bonsai museum where they (who is they?) can learn about bonsai and Bonsai museum.

Just need to work on sentence structure and "I think" is usually in the beginning of the sentence unlike in Japanese. This is very good and I learned a lot! These are just some suggestions but I hope this helps!