i want to create a small game

This is very random. You have to be more specific about what you want to do.For a start i would recommend an understanding of unity - edtor controls, scripting options etc [http://unity3d.com/support/] before you post anything else as no one is gonna make this game for you.This is a place for design or code help in case you're facing difficulties.

If its an art related issue tell us exactly what you're doing or if its a problem with your code post a snippet so we can help you out.