I use these nails and through trial and error I've learned a couple of things.
When you apply them spend twice as long applying pressure to stick them down, especially on the tips of your nails, as you think is necessary.
Be aware that applying pressure to the sides of the nail can make it buckle in the middle.
Try to keep them on for two weeks, they are easier to remove the longer they've been on.
Treat them as you would any manicure, by being careful what you do with them for a couple of hours after applying.
when removing them, use oil (I use a cuticle oil) start from the bottom and roll them, don't pull. As soon as you feel resistance, put a bit more oil on the exposed nail and leave it to soak in. Just do another nail in the meantime.
take plenty of time removing them. It takes me about 45 minutes to remove mine with little to no residue left on the nail, and no damage to the nail also.
I bought the standard nails the first couple of times and found they were too wide for my nails. I now get the customs made ones which are much easier and quicker to apply.
I have had a really good experience with them and I hope you have the same.
Oh, and if you haven't already got some, get some small nail scissors.