What about it did you customize and how did you decide what they should be? For example, did you shape it like yours (or a porn stars)?

That answers my question. It gives me an idea of what shapes work. For example, the outside is wide circle so that isn’t prohibitive. Thank you!

What type of plug do you have? I’ve thought about similar things with my partner but could imagine the shape of the plug could make it uncomfortable. What’s the “outside” shaped like?