God, I try not to do it, but I have a couple scenes I know need to be there, but actually sitting there are drawing them is UGHHH so I find myself making things a lot more messy than I usually would because I want to get it done 
For me, that's currently a fight scene I'm dreading and yet I know that that scene leads to a scene I've been really looking forward to do, so now I just wanna get it done!! It's not like I can slack off for a fight scene either, cos then the audience won't know what's happening.
Anyone else have a similar experience?