Awesome renders!I Love it!The character was pretty cute Great job mate!Try to add more simples to the renders(a little bit noise),Of course 5 Stars of modeling and rendering!
You are 17 and did this in only one week??? That’s pretty amazing.
BTW. You can fix that sharp bend in the elbow by using weight mapping to control how the bones influence the surrounding mesh. Aside from that one little issue your both your model and render are really spectacular.
If you stick with this 3D thing you are going to be really amazing before very long.
Thank you for all your comments !! am really working on to improve the results. This is just screenshot I would like to share the lighting mainly observed from the blenderguru tutorial : http://www.blenderguru.com/videos/mastering-lighting/