So, i've always been interested in attempting to draw sci-fi stuff, sketching it out on paper before loading it up into photoshop and creating what I want with it. There's only one problem; I can't draw for shit.
I have tried countless times and whenever I do I just feel like i'm not creating what I want, or it looks infantile. I sort of understand the rule of three principle from photography, but i couldn't for the life of me draw it. I'm quite good at architecture based stuff, but when I get to putting it onto photoshop I don't know what to do next. As if I don't have enough detail to do what I want.
Here's a scan of a basic mech I did a couple of hours ago (spoilered for size):
(see link below)
Basically i'm looking for advice on what to do. I do know that a good start is to draw circles, then build from there, but I don't know what to do next, or how to sort it out properly so that I end up with something good from paper to digital.
Any help would be much appreciated.