It's a packing tape sculpture of my hand.
I covered my hand in cling wrap (making sure the fingers were separated) and covered that with the first layer of packing tape. I cut a slit near my palm so I could wriggle it off and I then had what looked like a nub with five other short nubs attached to it. From there I painstakingly built and sculpted the hands and fingers to look like how I wanted them to look.
I wish there was an easier way to describe the process :/

Good luck though!

Thank you so much!
The costume will be flawless once my new helmet is finished and when the vectors are made out of better materials.

The vectors are packing tape sculptures of my hands attached to a harness.

Yeah. My professional made helmet won't be done till Metrocon though :/