I just wanted to ask for a little advice.Usually i would try to figure it out myself but i´m kinda stuck.It´s not like i can´t do it...it´s just that it looks messy and crappy

Currently i´m working on a low poly character model (below 900 Tris) and i was wondering if someone could give me some tips.
What´s the best way to do arms,elbows and knees?
How can i make it deform well?
Thanks for any help in advance.

Replies
The basic idea is add another edge loop on the side that bends. Doing such a low poly model, you won't have to add many.
poop has an animated gif that might help
http://www.poopinmymouth.com/process/tips/limb_deformations.gif