Thanks for the fav! Nope, no pattern. I don't have the mind for numbers, so I make my own patterns/go by eye. It's pretty simple though: scrochet in the round, 3dc in 1sc for the frosting edge. The bottom is just crochet in the round with a row of dc to start the sides/the cup shape.
Yeah I'm just teaching myself to crochet on the round, I can see it would be quite easy to make it as you go. Might give a cupcake a go once I finish this snail I'm making now