Similarities and differences between me and my cousin

I remember when I and my cousin were child, Everyone who has seen we for first time, they think we are sister; however, I think there are some differences between us. Considering the appearance of us, although both of us like to play with boys, unlike her, I like to cut my hairs on boys' style. I am very much been in my privacy; in contrast, she loves parties and social activities. Furthermore, I watched much more movies than she did.

The similarities between us, however, outweigh our differences. We have also a lot in common. Considering the appearance both of us have black hairs, white skin and brown eyes. We are both hard working and industrious about our assignments and responsibilities. Not only does she like doing exercises like swimming and playing tennis, but, just like me, she enjoys dancing and listening to music. I like my cousin a lot and hope to be health and happy forever.

Hi! @mina_banano

Here are my suggestion for you paragraph
1: I remember when I and my cousin were child.
Correction: I remember when my cousin and I were children.

2: I would write a period to start the second sentence in the first paragraph

3: Everyone who has seen we for first time, they think we are sister
Correction: Everyone who has seen us thinks we are sister

4: I would write a period before however.

5: I think you should organize you Ideas, and write the similarities in only one paragraph and the differences in the other.

6: Considering the appearance of us, although both of us like to play with boys.

7: Considering the appearance of us, although both of us like to play with boys, unlike her, I like to cut my hairs on boys' style. I am very much been in my privacy; in contrast, she loves parties and social activities. Furthermore, I watched much more movies than she did.

Correction: First, we are not physically alike. Unlike her, I like to cut my hair like a boy. I enjoy being alone while, she loves parties and social activities. Furthermore, I have watched much more movies than she has.

8: I like my cousin a lot and hope to be health and happy forever.
Correction: I like my cousin a lot and hope to be healthy and happy forever.