If we are afraid that the glue does not stick, no worries, it sticks hard ... But then for beginners like me, not to put on the skin, very hard to remove. Otherwise I started with the thumb, that's good. For dimensions, I should not have very broad nails because I have trouble finding the indentique. Otherwise they are better for me than that Peggy Sage because no demarcation, so no moon file level, it fits to the skin. This will cut easily with a pair of scissors, you can even cut the edges false nails according to the prior desire paste, apply to me I prefer to grind least once installed. A little polish and presto there ... For a first installed, I'm finally satisfied if it holds good for others also ...