Honestly, I’m going to have to say that’s hardly a concept for a game you have there. A piece of concept art? Maybe. Is it your piece of art? Or is it someone else’s art?
A lot of elements go into making a game, and a lot of work goes in as well; this is why for a lot of the bigger budget games you see take teams of a hundred or more, with a ton of artists, animators, sound engineers, etc. all working on it at the same time. Expect a lot of work if you’re wanting to put this character into a game all by yourself!