Games - TwistOfFate

When my imagination to create the Game with my own brain,it is truly magnificent. Then Eventually a Great idea is appeared from my brain to create The Android FPS Game Named TwistofFate or Simply Fate. I'm only working alone to Create Model,weapon or Script and all. And i'm using Unity3d Engine. However for first time, i must drawing the Model itself in my Drawing book then ican painting it in Unity engine. This is Probably Hard to do it.