There's a couple of ways to go.
One way is; Future, decal, future (then dull coat if you want a flat finish)
Another is; Future, decal solvent (micro sol), decal, decal setting solution (micro set), future (then dull if you want a flat finish).
The micro sol makes the decal much more flexible and really helps them to conform to diferent shapes. The micro set pulls the decal down into the different shapes and makes the decal look painted on.
HTH,
Fred