Products I used:
- Base nude color is OPI's "Don't Pretzel My Buttons"
- Leopard spots are OPI's "San Tan-Tonio"
- Black is OPI's "Black Onyx"
- Seche Vite Top Coat
- Calvin Klein "One" Matte Top Coat
- Black Acrylic Paint
It comes in a black box and it's in the makeup section at ULTA. If this is out of your price range then Essie's "Matte About You" will do the job for $8. ULTA has been sold out every time I've gone but you can order it off amazon. As for other top coats I haven't tried any other matte top coats so I wouldn't be able to say which other ones I'd recommend.
If you have any questions leave me a comment or email me :) Here's a tutorial if you would like to achieve this look: