I think this looks amazing~! XD I love the texture look you put for his outfit. Also great job on the shading. It bring out Jack's hair and his emotion in the photo. Also you did great on the tones for the hair. The only thing that is a little off is his smile but other than that I think you did great! I also like your vision of Jack. His eyes compel the watcher like what is he going to do next. The snow you did also for his sleeves is amazing! It looks so real like I could really touch it!!!!!! Amazing job, Random Draggon! =^.^=
The only thing I will say is really off is the mouth. From an actress point of view, not an artists, expression is what counts. From seeing the movie he can give a real smile, but it's usually smaller, this is too big, and in fact something close to a smirk would be more appropriate? Just saying.
And his eyes could use some shading depth in the whites. Make them look less a solid plain of white and and shading around the edges to make it looked curved around back to the head, would look good. Them Iris's though. MMMMM~
This is awesome, first off. I really enjoy your way of shading, and the way you did the frost on his jacket. However, The shading. It seems like for each piece of this, (Skin, hair, Jacket) You used a different shading technique rather than sticking to just one which makes it a little less realistic. (Ireallylikehishair;- His smile seems a bit off, like Krystal previously stated. And I think that if you would get rid of the black outlines, it would look even better because black seems to flatten out a drawing, especially when you trace the finished lineart with it. You did really nice on the contours of his face, by the way.