Hi there
It's always best to check things out with a spare decal. Most are fine, but some decals react badly to setting solutions, while others seem to be totally immune...
Anyway, the basic sequence is:
1. Wet the area wherethe decal is to be applied with Micro Set.
2. Apply the decal and blot it down.
3. Brush Micro Sol over the decal.
The Micro Sol will probably cause the decal to wrinkle, but don't panic, this is good! - it will smooth out and and conform to the surface as it dries.
On very irregular surfaces, you may need multiple applications of Micro Sol to get the decal to settle. (There are stronger solutions such as Super Sol and Solvaset).
Hope this helps
Rowan