drawing same subject over and over

oh, you mean drawing >cartoon< over and over again, without making them look different? but with different actions?
that was my problem before, but i sloved it like this:

first i drew a sketch of it, in a normal position, a little detailed (clothes, strands of hair, eyes, etc)

while observing my sketch, i'd draw it in a different position, this time looking at the left. after drawing, check if the details is the same with the first one. If not, grab an eraser. 

then you could continue drawing the >cartoon< in different positions, just don't throw the first sketch away because it would act as a guide! 

i hope this could help!!