You are improving, but I wouldn't consider this as GFX, I would consider it art.
GFX are signatures and banners and the such, this is just art.
And, this is good, but the name could have had a clipping mask of the background pasted into it, horizontally flipped, and you could have played with the brightness/contrast a little bit to get an even better look at it.
You should try your hand at Pentooling instead of brushes, if you learn how to pentool(if you don't already) you'll be boss in no time.
5/10 for GFX
7/10 for Art