Sorry for the delay, I don't check Deviantart very often! I'll actually be redoing this same costume for Halloween this year, but with less white makeup (I bought some pale beige makeup to mix with the white), so I'm sure I'll put some pics on here! I hope it ends up even better!
For the fingers, I bought some "witch fingers" off ebay... or actually... I think from some online store I found via google's Shopping search. Pretty sure it was some random online store that had them for pretty cheap. I cut the tips off of the fingers (because the witch fingers have horribly sculpted black fingernails on them and they were too long too), and sculpted new tips with Apoxie Sculpt. I then glued (or epoxied... can't remember), fake fingernails I bought super cheap off ebay. They were just regular finger nails girls wear, nothing demonic or anything. I used finger nail clippers and scissors to shape them, and then sanded the tips so I wouldn't scratch and hurt anyone. Then I did some sculpting on top and around them, and painted everything. I need to get those fingers out this week and see if I need to repair them at all. I think I will redo the sculpt on the thumbs since they didn't look like thumbs and give them a fresh coat of slightly less pale paint so I can just put some makeup on my hands this year instead of painting them with acrylic paint. The acrylic paint didn't irritate my hands, but it did crack like crazy. Not the best method, but cheap and I had acrylic paint already. I used Delta Ceramcoat brand. I researched and made sure it was safe to put on large areas of skin, and while not recommended, it isn't something that is considered a health risk.