Also I was wondering if maybe you could add an explosion for the bomb (I have no artistic talents)
I've super overloaded recently, so no chance in any predictable future. Sorry.
However, I'd like to give you an advise: Drawing good explosion is super time consuming and doing it right is not easy. You'd better learn how to use particle system in the game engine of your choice so you can do it yourself. You'll be able to get great results with little work and your artist can focus on other stuff.