1. "just vote" is a very bad and generic title.
2. this is a CS2D skin right? So why did you post it in off-topic?
Fixed that for you. Please pay more attention to these things next time. Thanks.
For the skin itself: The shape is okay (although not perfect) but it's just 2 colors. No shading or anything. This makes it look too plain, flat and simple. Add some shading and some details and it will look much better.
Pretty much as DC said. It doesn't look only flat and simple but also it looks very ugly when a skin like this lacks important things such as shades and whatnot. You have to practise a lot on shading and detailing your skin.
Other than that, I suggest you to not edit other skins and re-colour them (like you did it recently)! Editing a skin such as a weapon is not always a bad thing but re-colouring it makes worse.
You have just download another ak skin and look at yours and at another one.. at yours.. at another..
I even started to make something that may looks like a shadow.. You used two colors as DC said.. But you have to learn first - would you really use it for your own?