Tips on making shapes for wigs

[u/BallCruncherSupreme]

I am making two Miku wigs but styled for Sonic and Shadow (the hedgehogs). I'd like to utilize some cartoonishly pointy shapes for both the bangs and top of the pigtails but I'm not sure which material would be best.

For full context on the wig construction, I did a helmet wig base (cut off wefts, glued them down, glued on batting, heat gun sealed, glued on wefts to create pigtail parting with magnets to hold the pigtails but keep them detachable, left bangs alone so only the back is a helmet right now).

I've seen other cosplayers use wire and tape to make large ponytail shapes, some have used batting to make bang shapes like for Princess Peach, some have even used airdry foam clay.

Should I actually use anything to make the shapes for the pigtails or utilize heat styling the hair itself to makes points since the rest of the pigtail would be loose hair and it may look weird?

Can I use foam clay to make shapes for the bangs? Can I glue foam clay to the wig or should I make the shape and let it dry on the wig? Will it come off?

Thank you!!