Ok where to start.
[NOT TRYING TO BE AN ASSHOLE]
First off, I reckon you are quite young, therefore started recently
The current array of work, seems unfortunately amateurish, comparative to the "ohsodamned" forum signatures.
My advice is try and see what the more edgy and "avantguarde" graphic designers are churning. Some inspiration can come from t-shirt designs, website design, etc.
Frankly right now this work is pretty much unsellable.
Not necessarily because of the effort but because they do not look professional or desirable for the least.
Graphic design is not my forte of course but I know when any sort of design is lacking and so can the majority in this community.
Just stick around, absorb knowledge and grow.