The bigger one is a wreck, sadly.
I think that hammer is still a bit large but make sure you tap very lightly. your not trying to drive a nail you just want to dent the top of the pin with each hit and each little dent will add up to a nice rounded head. On the material you can buy the rod from TexasKnifesupply in 1/16 nickel/silver or brass. Classicshaving has pins themselves I believe.