i used green stuff for my librarian;
a) make a small 'ball' of green stuff and gently lay it onto the leg
b) using a sharpish & finely pointed tool, gently press down the very edges of the ball. (it takes
alot of paitence!)
that should give you a rounder, less flat stud effect...
of corse, all you americans can look for small brass ship-building pins! (that's what dave taylor uses... generally availiable from hobbytown USA stores IIRC)
sadly, i've yet to find any of these in the GTA?!
cheers!