Here's a quick tutorial of the way I make my domed rivets.
I hope you find it useful
Here are the main tools I use:
Swiss Beading Tools
Here's how the edges look:
I use Evergreen styrene 0.005" (0.13mm) almost as thin as a sheet of paper and I punch it through against a piece of hard vulcanized rubber (in this case a piece of an old cutting matt) The main secret here is the pressure you apply on the hammer: too little and it won't cut the styrene, too much and the rivet will be too embedded into the rubber:
Here are the finished rivets:
Hope you guys like it!