Hi Quickchange, I'm not sure what you mean by edge??--but say you have a bump in the road or even a split in your surface (like a car door) & you want to continue the line over or thru this problem--sometimes you can disregard it & if the heal of your brush is full enough it will handle the problem itself, but if not, ease up on the brush stroke & you may have to return to finish it up..It's always nice to be able to finish the stroke in one pass because it gives the prettiest flow, but many times in nasty spots like you're speaking of you will have to return to do a little touch up--sometimes headed in the other direction..In hard to reach areas or tight spots it's helpful to use your left hand & elbow as a bridge, (you use your pinky finger to rest on any spot that's available without hitting your artwork) or it's very professional to learn how to use a mauhl stick (you can make one yourself) Using a mauhl stick always has been a sign that someone really knows their business & it's not a sign of weakness at all..Just takes more practice but it's very helpful.. On curves & circles it's very important to have a light hold on your brush & the secret is to slightly twist the handle of your brush between your fingers as you make these moves..You never, never hold the brush tightly (holding your brush tightly = big mistake made by most beginners!!). The handle must be able to swivel between your thumb & 3rd. finger..so much so that the my 3rd. finger builds up a large callous that over the years has never gone away..I now have a callous on the 3rd. finger, a huge bump built up on my trigger finger from so much excercise, paint built up under & around my nails--good lord--they're going to have to bury me with gloves on!!
lol..--all part of the business..misery loves company so I'm real glad you're hopping aboard..