This one here is very much like your last "ROCK VS" drawing but this one is much better, the elimination of all those black lines and giving more details into the effects and things in the middle was a good thing you did to improve this piece. I do think you could still make this bigger in quality and size as it is a nice concept. The effects are still not here but you used details with your lines to create some nice textures and detailing. Overall a nice piece of art and more improved upon your last one, so always good when you come back to things and tweak them.
~~THINGS TO IMPROVE ON~~
Better than the last similar one but still needs to be bigger and have more effects inside it