I started out trying to replicate this tutorial that I saw ages ago. However, because of the way I cut my tape triangles (and the fact that I cut SO MANY & refused to waste them—this took 60 little tape triangles, if you can even believe that), I ended up with this more general jagged pattern instead of the explosion shape from the tutorial. But that's okay! I'll try the explosion version again later, now that I know what I did wrong, and I already have some ideas for adding a little something to it, too.
I started with a base of OPI Can't Find My Czechbook. Once that was good and dry, I put the tape triangles on one nail at a time and added my black (a-england Camelot). Then, once that was dry, I did the tape all over again (leaving a little of the black to show around the edges) and added Zoya Trixie.
I think it's definitely possible that some or all of this could be done with a nail art brush instead of tape, but I know my hand isn't at all steady enough to get the crisp lines I wanted. I also genuinely enjoy doing tape manicures, so I didn't mind all the fussing with it required for this method.
Thanks for looking!