My Lovely Son

I have a lovely son, his name is Feife. This year he is nine years old this year; he is in grade four (or "he is in the fourth grade"). He is very clever, but a bit and naughty. He really especially likes manual training; he can fold many animals (out of paper?). He likes to draw and watching cartoons; he also likes to play computer games. I love my son!

Notes:

Especially - In the context of the above sentence, we would only say especially after stating what someone likes/likes to do in a general sense. For example, "I love ice cream, especially chocolate." "Wow, I love your outfit, especially your scarf!" 

And - When putting two contrasting ideas together, it is best to use the contraction "but" instead of "and".

For example, "I hate to exercise, but I love swimming" (These two contrast because you are dealing with "love" and "hate", also swimming can be seen as a type of exercise), or "He is bad at reading, but he is very good at writing." (Since you are talking about something he is bad at you can only connect something he is good at with "but".)

"And" would be used if you are talking about two or more things he does that are similar, like if you are talking about two things he does badly, or two things he does well. For example, "He is good at writing and drawing.", or "He behaves badly in class and he doesn't pay attention.

In your essay, since clever and naughty contrast, you want to use "but".

Tense - When listing something, always keep the same tense. For example, "He likes watching cartoons, and playing on the computer." or "He likes to watch cartoons, and to play on the computer." You cannot say: "He likes to watch cartoons, and playing on the computer".