Love the pixel art, it's a bit buggy, but usable.
Now to make the Monero folks happy, you need to invent "zaps" for monero and monero invoices instead of zaps lol
Here's a simple design for Monero zaps. Unfortunately the NIPs process and nostr spec is pretty strongly gatekept by the current Bitcoin maxi class. That's why payment targets took a year to make it into the spec. Not exactly an encouraging environment for people interested in anything but Bitcoin to contribute to the spec.