Unfortunately, I've never been able to find a solution myself, I've resorted to using conforming claw props, all of which are store products, have never found freebies. Vicky's nails don't take to extreme lengths...V3 also shares this fate :(

Here's a few of the packs I've found peace with...

Ultimate Fantasy Villans by Darkworld at Daz3D
Goblin Queenby Darkworld in R'osity mp.
Dragoness Vicky by Traveler over at RDNA.
Monster Parts 1 by Traveler over at RDNA too...I use this one the most.