Ah, I can totally relate! I also have the problem of posting art of the same characters all the time and I feel guilty because I know a lot of my followers don't follow me for that series, and I want to make them happy by diversifying my art but I have no skill x-x But persistence pays off, in the end! ^-^ (it does, admittedly, take awhile) I know your future posts will be awesome!

Urgh, I hate those accounts that just follow everyone. Especially the ones that try to make it sound like it's a good thing. *cough alexerieinc cough*
I'm a bit scared of getting too popular too, but only because I don't want to start some sort of fandom that only ships my characters with their fan-characters like what happened to Homestuck. And Off. And MLP:FIM, and Sonic, and blahblahblah AHH
On the subject of drawing skills though, I've never tried this much before but maybe the pre-drawing skeleton of circles and lines and stuff might help? I only use it for certain poses I'm not familiar with and each time it's helped me out.

Dude I'm happy to help. Just message me on the tumblrs and I'll share what I know or help how I can.

THAT. IS. ME.