Send me an illustration or drawing of anything and I'll give you some constructive criticism.
It's always good to hear others opinion. Especially if you want to improve!

I'll give an honest and detailed review of your drawing, what works, and what could be done to enhance the image.

Things I look for are:
•Composition: does everything fit on the page. Are things missing because there wasn't enough room. A simple mistake people make is drawing something st the top of the page, making it too large, then to fit the feet (if it's a person) on the page, they make the character too short and it throws off the balance of the character.
•Value: when shading with pencil, never be scared to go to the deepest black.
•Use of color: does it use one value, contrasting shades? I can help with the color wheel.
•Graphic: to me, how much white vs black is on the paper/canvas. The more contrast an image has the more "graphic" it becomes.

If you need anything else, let me know.