This product was great, I've got brilliant prints of my sons feet, although his hands didn't work as he wouldn't stop wriggling. The wipe goes on with a slight yellow colour so you know if it's covered the area you want. The only downside I would say is if you're doing it yourself with a wriggly newborn, it's hard to stop from getting the wipe on your own hands which then marks the paper/card, but I was trimming down the card/paper anyway, so it didn't matter for me.
I'm planning on reordering this again in a few years to do his hands as he grows.