Здрасте! Проверьте пожалуйста мой текст:

Ну, проверили. Что дальше?

My best friend is Derrick, he is tall and black hair. He was a year older than me and we have birthday on August 24 We became friends when I went to the height school and we were sitting together and chatted. We spend a lot of time together. We like going to football matches, play tennis and anything’s. We have our disagreements, but in general we try to avoid conflicts. He sometimes sticks up for me. And I'm sure Derrick is the best mate anyone can ask for help.

and HAS black hair
He IS oneyear older
high school
and we set together and chated.
play tennis and other games
try
He sticks up (?) for me sometimes
mate = friend, fellow, person

and HAS a black hair
highT school -> high school
We like going..., playING tennis and
anythings  --> other games

Было бы  интересно сверить с оригиналом)) (русск.яз) ....
My best  friend is Derrick. He is tall and black-haired boy. He's a year older than me but we both have birthday on August, 24. We became friends when I went to high school. We were sitting next to each other. (Вы сидели рядом .. а сейчас уже не сидите? Если и сейчас .. то будет - W are sitting ...)  Derrick and I have a lot in common, so we spend a lot of time together.  If we do fall out,  it's  never for very long. ( Vне непонятно использование  фраз. глагола stick up .... Вы то сами как его перевели? .... есть предположения ... исходя из контекста -как поддерживать, лучше заменить его)) )
Он никогда меня не подводит. - He's never let me down. Я могу на него положиться. - I can always count on him. Он человек к которому всегда можно обратиться за помощью ... можно так - D. is the person you can repair for help to.

My best friend is Derrick, he is tall and black-hairED.He was ONEyear older than me and we have birthday on August 24 We became friends when I went to the HIGH school and we SET togehter and chatted. We spend a lot of time together. We like going to football matches, playING tennis and OTHER. We DISAGREE WITH EACH OTHER, but USUALLY we TRY to avoid conflicts. And I'm sure Derrick is the best mate EVER.