hey snowm,
nice work! My suggestion on what pic to make next depends strongly on what you need and how expirienced you are with your dremel, on what picks you own and what locks you want to pic, what material you have access to, and so on.
If you have less to no expirience with your dremel or no picks beside the one you made, i'd strongly suggest you start with some basic pics (eg. half diamond, hook) in different sizes and a snake as rakeing-pic.
If you are well equipped and want to gain some expirience with making pics, do whatever interests you most, and then do the next
If you have a special lock you want to pick, go, do some reading find out which pick works best on this type of lock and do that pick.
If you need some challenge and have access to nice sweeper bristles you may think about ripping off raimundos bogota picks. (just search for them if you aren't familiar with them) I've never read anything bad about them and they aren't _too_ difficult to make. There should be a tutorial by raimundo, on how to make them, on the web.
If none of the above categories matches, you may know alot more about you needs than i do.
hope you have fun grinding your own tools
wtf|pickproof?