can someone tell me a good way to get the head not too big and the body not to irregular?

for humans? there are those wood puppets (y http://upload.wikimedia.org/wikipedia/commons/archive/9/94/20051011175556!Holzpuppe.jpg ) they are pretty good to learn proportions,or you could look at pictures and search for lengths that are similiar to each other (for example the head should roughly be as 'long' as the lowerarm and such things) and of course practice,practice,practice ^^

Hi there! The human body is all relative proportions, and these vary between the genders. Here is a very helpful article regarding such. http://www.idrawdigital.com/2009/01/drawing-the-human-form-anatomy-and-proportion/ The internet is wonderful for straight proportion, as a google image search for 'human proportion' will tell you. This part doesn't take much outside help. Try 'human facial proportions' for the actual face, and feel free to message me if you have any questions. :)