Thanks for your comment . At the begining I worked mainly on the modeling of this 3d model and I used the lighting just for that the personns can see if my 3d model is good or not. Moreover , I have a student version of maya and I learnt maya just with internet. So I don't know really to create a studio setup.
Your model is just fine- there should be some tutorials on the web, describing how to create a studio setup...if you want to make one
