Painting preparing for decals

I don't have any solution for the already applied decals but in the future, you should think of spraying the whole model with a clear gloss coat then apply the decals and then spray a clear flat coat for the finish.  That's how I proceed generally and it results in a very even surface.  Sometimes, the decals are so thick that it still showing a bump but I can't control that.

Thanks for the suggestion.  The next time I will apply a glossy coat first to the entire area and then proceed with the decaling.  Thanks again