decal-applying techniques....

I am not new to decaling, but I want to perfect my skills (like everyone...). I was just wondering how you guys apply your decals. Taking the advice of many articles/posts I've read, I give the model 1-2 coats of Future, let the final coat dry at least 48 hours, soak the decal in water for 5 seconds, place it on a paper towel, wait about 10 more seconds, apply Testor's decal set to the area on the model, slide the decal on, and (if the decal is big enough to get a hold on it) slide bubbles out with a damp Q-tip. However, on one model my decals look like the have many itsy-bitsy bubbles, making them not blend in with the surface. I alos do spray a coat or two of Future after the decals have dried, but this still does not help. The only cause of this problem I can think of is that maybe, because one the model I'm having troulbe with decaling, since it has a flat paint job, maybe I'm not spraying enough coats of Future. However, I was afraid that spraying too many coats would fill the panel lines or cause other damage. I hope I'm making sense here. Please help me if you can.