Rushed.
The word came to me as soon as I saw this: 'rushed'. That's what I think about all of your pictures, anyway.
I'm sorry to say that it's really poorly done. The man is almost taller than the door, for one. The doorknob is a single touch of the brush tool and nothing more. Everything is just bland.
The man is dreadful. You drew an ear to him for the sole purpose of drawing an ear, it's only a few inches near his eye, it needs to be much further. The glasses look like they were crushed by a car. The nose is probably the worst, it needs to be much, much narrower. The moustache has the same problem. Why am I getting a feeling that you gave him a moustache like that just to cover his mouth, which you say you aren't good at?
The clothes need much more effort, too. What is he wearing on the top, a sleeveless sweatshirt? Seems sleeveless to me. The hand is very small and simple. The book is all curly and there is no way on earth someone would hold a book like THAT. Furthermore, the shoes are extraordinarily small.
There is absolutely no sense of proportion in this. If the man curls his right arm fully, his hand can touch the ground.
By the way, why does it still have the overflowing problem? Likewise, the ear looks like anything BUT an ear, so I'll be taking off points for that too.
Serious work is needed on this. You can't expect to make something good in a few days' work. You really have nothing to lose by giving it a week more. DO NOT RUSH. Rushing will only result in self-punishment. Keep improving it until you really feel that it's ready.
Out of 10, I took off:
-1 for the blandness
-2 for the incredibly poor proportions
-2 for the fill overflowing
-3 for the effortlessness
3 out of 10 means there's still hope. I repeat, DO NOT RUSH. Spend more time and effort on your artwork, take it seriously.
Keep practicing.
~Review Request Club