Welcome to Simply Maya! :attn:
Lighting needs to be fixed.
The shadows don't match on the big orange thingy and the little white guy.
The shadows on the big guy are too dark for that type of lighting. Check your settings and try again. Also, try deleting the whole lighting setup and insert a new one. Sometimes things can get screwed up if you change a setting. In the Hypershade, delete the three physical sun_sky nodes and then the light itself, then put in a new one.
------- EDIT -----------
Since your lighting needs work, I've moved this to the WIP thread.
Professor of Digital Arts
Digital Media Arts College
Boca Raton, Florida