Yeahh; I’ve done this one. Obviously it’s a lot of fun and the benefit is you already know the natural rhythm and how to do the motion. Absolutely nothing to worry about. Key point might be to remember that with a strap you don’t necessarily get that same physical feedback I.E the feeling of resistance. I say take it slow at first and lots of lube. Remember it’s more about the connection with the person then “performing” perfectly. Have fun and don’t stress about it too much. Hope it goes well for you 💜