I've been working on it on and off for about 3 weeks. I'm really lazy and slow when it comes to drawing. Keep in mind that it isn't finished yet, I figured that if I posted it here, I'd be more motivated to finish it. If anyone has any constructive criticism, or suggestions on how I can improve it, I'd like to hear it. http://www.deviantart.com/deviation/34606920/ sorry about the crappy sizing.
Maybe make the space between his eyes a little wider. Also, his right (Your left) eye is kinda mishappen. More shading would add a dramatic effect. His hair is too....normal for him. Make it more wild and free. His chin seems a little too far out on the outside corner. His mouth is pretty good, though....nice and full. It's coming along nicely.
constructive critisism here i come, lol. I def. would shorten Jims chin just a little to long I think for him and you def. have to picture more of his wild curly BEAUTIFUL hair. I think that will bring more light to your picture. Hope that helps there If you like Jim though and like drawing him as much as I do. Then just go and look at images of him over the net or wherever you can find him. Heck just reading about the man has helped me to draw him too