Alright. I have gone through your gallery.
I have a couple of questions first. Are you drawing freehand style or are you using guidelines?
Also, are you using only one pencil or are you using a pencil set that has different variations of hardness/darkness (2H, HB, B, 2B, 4B, 6B)?
There are a couple of reasons why I am asking this. I await your reply and I will give you my opinions after that.