This... really isn't that good. The lining is too scratchy, and the colouring and shading is very poorly done. I recommend using photoshop right after the initial sketch, and use the sketch as a base for making the actual image. It's what a lot of people do, and it turns out well.
The proportions are pretty bad, but not awful. I mainly speak of perspective, like his right hand... Ugh...
All in all, I just recommend more practice, using some bases/poses you can find on Deviantart, and using Photoshop or Paint.NET to make the final product.
Alright, I appreciate the input, I acknowledged these flaws before I posted it but decided on posting it anyway. I immediately picked up the book Michael Hampton's Drawing With Figures which has helped me get back into proportions and loosening up my hand. It should be worth noting this drawing was just such an accomplishment for me because it was the first finish piece in a while, even with its flaws. I'd recommend, and even appreciate you check out some of my other art and see how I'm still progressing my artistic goals. As for you, while I appreciate your feedback, I wouldn't go around commenting on others' in such condescending tones when you yourself have no art in which others can critique upon. I recommend you experience the feeling of putting your hours of work out in public for others to judge upon with whatever words they please; I'm sure your tone will change. Once again, I am very grateful for your feedback, as I will note and focus on not repeating these flaws in my next drawings. I understand this is the internet, and exposing yourself will always come with negative feedback, I just recommend those who dish it also experience it themselves. Thanks!