Looks promising. Good luck! I read up about how the drawing ointments work and you would put it in the middle of the hole - it softens the skin to make it easier for the pus to break through.My first attempt wasn't all that clever. The second was better. Today I got it about right. The main problem is the bump faces slightly forward and is close to the middle toe. They've all stayed on and the last two have stayed where I placed them. The first of the last two wasn't quite positioned correctly.
This is what I make.
View attachment 2492981 View attachment 2492982
The black stuff is neoprene and I'm going to try that next. Getting a tidy hole in it is the challenge. You need a hole punch the right size for best results.