Welcome to the FC subforum!
Your sigs are very nice considering how new you are to everything! You have an interesting style, but in order to develop it more, try varying the width and length of the rectangles more (like in your most recent one but even more), and also try experimenting with clipping masks and other shapes/tilting the rectangles. Also, make sure to work on those fundamentals (lighting, flow, typography, focus, depth, etc.)
Here's a tut I found very helpful. And keep experimenting and practicing!
Oh btw, have some cookies!
