I just got threw putting together my first pedal kit (vintage replica of Electro Harmonics LPB)

Just painted....
I purchased some lettering from micheals craft shop which I am going to use for labeling.

I was going to use Mod Podge over the lettering (may even put a picture on the pedal)..to seal and protect.

Has anyone ever used this stuff? My main question is...If I only mod podge over the lettering will there be a glossy finish around it? Should I use the mod podge over the entire surface of the pedal to gloss the whole thing?