Having used all of the suitable field caps from the Perry's plastic Prussian infantry to convert my ACW infantry into Mississippi Marine Brigade types, I thought I'd have a go at sculpting some of my own.
After a little experimentation I think I've come up with something that'll work.
Finally, a small piece of Green Stuff forms the peak. I've found the best way to apply this is to shape it roughly before applying it and pressing it onto the cap with a sculpting tool. I then squeeze it into shape with a pair of fine pointed tweezers.
I need to paint up these samples to see what I think of the finished items. If I'm happy they'll save me buying a whole box of Atlantic Prussians just for the caps!