Yep.. footwork tends to get overlooked on roofs.. keeping straight arms is another that will let you hang off the bones and not your muscles as much.

heel hooks.. even tossing your foot sideways onto a hold if you cant get a straight up and down heel. depending on the terrain toe hooks work nice too but not as often

abs.. find a place to do pull ups where you can get your feet out horizontal and get functional training

practice campusing.. i'm not saying you're going to campus on route but if your feet cut then you need the same muscles and skills to get your feet back on

hopefully once you get more confident on overhangs you can relax and not over grip too much.
i like roofs but my latest project is alot more sustained roof and long moves than ive done before so i know i overgripped in the beginning of the route that hurt me later on. also my foot work wasnt great because i was looking too much at where my hands had to go

if the clipping part is your problem then hang a draw so it's free hanging and jsut practice.. you'll get used to grabbing it in ways so that it wont spin on you

Remember the monkey bars when you were a kid? Same principle on a jug haul, just looks a little different. When you get to the roof section, close your eyes and picture 3rd grade.

I used to get spooked on roofs and bulges until I installed a roof woody at my shed. As the previous poster stated you simply have to get used to climbing on a roof and the easiest way to do that is indoors.

You should also pay a lot of attention to your feet on a roof, they can take a lot of weight off your hands. Developing pinch strength helps too.

Some might scoff, but this is one place where the gym really does help. You don't even need to lead roofs indoors, though a little practice with the awkward upside down clips wouldn't hurt. Just get in the bouldering cave and get used to being upside down, making confident moves, and chilling on big jugs. If you're like most people, bad overhangs give you a "time bomb" feel, like your seconds up there are numbered and every hold just wants to spit you off. Clear that from your head, and you can cruise big roofs.

As for the smaller stuff (2-4' overhangs that only take 1-3 moves to get past), find one you can work on toprope and get good at making them happen fast. You just have to get the moves burned into your brain: get under it and make a plan, get out on it, get a hand over the edge and lock off, hike your feet or heel hook, and get off of it. Each one is different, of course, but they all have the same basic moves.

Finally, my maxim on crappy moves is always "think like an aid climber: if it sucks, get off of it quick." For aid it refers to placements, but on free it's the same principle: comitting now is better than comitting later, and once you're on the bad section you want to be off of it as quick as you can without blowing it by being hasty. It ain't like there's rest moves on a roof (unless you find a knee bar). I know this kind of sounds like it goes against the first idea of chilling out on roofs, but the idea here is get calm, and then get quick.

Oh yeah, and do those crunches :D

climb some at the gunks
you get used to roofs REALLY quick
then again, there is no sport climbing there
I'll shut up now
later I have heard of the gunks my friends climb there trad right I will check it out ...
dev

Yeah, be like Nike and just do it :) practice (inside or out) will help, but I think the key is to keep moving, even if the move feels wrong, just keep going and get it over with, or fall (unless you're looking at a bad fall or it's dangerous, in that case, ignore me so you can't sue me)