For all the moves I have made, it took me a while to remember to share this tip. When you take out your nails, face the claw up. This might be a bit harder if they are up high (mine was high but there was no room around the toilet to set up a step stool) and you don't want the nails to fall.
This shot isn't straight up but I wanted you to see the photo with the nail in the wall and the claw.
This keeps them in the claw until you can lower the hammer and take them out. Hope that helps!