>>6332646>decal softer to melt the decalno
>flat topcoat to hide the edgesmaybe, but not because it's flat topcoat
Right now your model is figure A, the decal makes a raised surface cause it has thickness.
Flatcoating will look like figure B. It will look like its smoothed out on the surface, and the flat surface sheen will mostly hide the raisedness, but it will appear like little bumps over the surface
The reason you are supposed to gloss before and after you apply decals is to hide it within a self leveling layer of paint, which means retarder for acrylic or use enamel paints. Lacquer thinners will dissolve decals, so best to avoid spraying layers upon layers of clear lacquer based topcoats over thick decals.