Spam download fonts that people recommend, and try using them.
The biggest problem in youre works are text, the moment you learn how to blend them in you will be in the highest level, then all you will have left is improve more and more on details ^^
Id recommend every sig you make when you get to text research on DA signatures with the same theme. Lets say its Sci-Fi, then spam research Sci-Fi tags and try to copy or get something close to those signatures
Dont stalk only mine, look up 10,20, 30 sigs if necessary when making text, I started a folder like Bobby has, thats called inspiration, I just save PNGs of works I think are fuckin crazy, so they may inspirate me sometime in the future ^^