RE: Can i use a dremel tool to cut out my new body?
I use a dremmel with a sanding drum on it to smooth out the wheel wells, but for cutting I use scissors.
#2 - Personal preference, I cut then paint. I tend to scratch the paint up when I do it the other way around. Scratches before you paint are almost always covered up by the paint unless it's a deeeeeeeep scratch.
#3 - I've used Windex on mine with no problems. Spray down the area and apply the mask, blot dry. SOME window masks are very "papery" and may rip when soaked with windex. Experiment a little...
#4 - I trim decals as close as possible...again, it's a personal preference...I don't like the look of extra decal if I don't have to have it...
#5 - If I understand this correctly...I would back the Metallic Blue with either Silver or White...then spray your window tint. They should be two separate things...windows masked while spraying Metallic Blue and backing color, remove window mask, spray window tint.
Hope this helps some...