Here’s the link to the Mayflower descendant sticker instructions: https://www.wikitree.com/wiki/Template:Mayflower_Descendants
Anne also created a good explanation on G2G if the template isn't easy to follow: Mayflower Sticker for Living Descendants
Why am I too dumb to figure out how this works???
No, you're not! It's a slightly tricky bit of code. Try reading through this one: Mayflower Sticker, for living descendants of Mayflower passengers, Now Available
If that doesn't help, send me a private message along with who your Mayflower passenger(s) was - the WikiTree ID for them, and I'll forward the coding needed.