Easier than a syringe, is take a constant toothed comb (CVS, Walgreens, Wally World, etc.) and remover every other tooth. Now make a little pool of glue big enough to dunk the length of the comb in, now, holding the comb vertically, roll the comb over over the panel lines you drew. Now you have rivets that are evenly spaced and all the same height. Repeat as neccesary.