Paper Clay help/?

So i bought a grab bag from goodwill filled with different craft stuffs and among it was a new package of PAPER CLAY. i've used clay before but not this stuff. so i played around with it a bit but after the stuff dried it still seems idk not right.

does anyone use this stuff?
tips?

i thought about coating it with clear nail polish or maybe some elmers glue to give it a decent protective layer but i havn't yet.

thanks!