I'm not sure what your goal is for creating art. Is it just a hobby? Something you want to do for fun and your own personal satisfaction? Or is it something you wish to go into as a career choice in the future, etc.? If you are looking at it as a career thing, I would strongly suggest finding an engine that supports…
Model looks alright, texture could use some work though. Your metal texture looks very cloudy, trying using This tutorial to create a nice metal base texture to start from. Are you letting the engine dynamically light this or are you going to paint the diffuse lighting yourself and use it in an older game?