04-03-2014, 09:03 AM
I think style wise you are nailing the look fairly well though check out the rendering on the mario ones in particular below, I think you need to look at more gradation in the shadow areas to define the 3d volume and give more of that 3d look as well. When you have troubles with anything fundamental always always go to reference to save the day and give you ideas. Compositions, perpective, poses etc. As it is a game cover you can go with montages more than a one scene illustration. It might make more sense especially for a multi game sports game. And use the actual olympic colours too...every symbol counts to making it instantly readable.