You need to measure your fingers going nail by nail. Remember to measure all of your fingers. Also all nail tips do not measure the same.

Yes, get a sizing kit it is the best for an accurate fit.

7 days based on the volume of orders. But most time 7 days if not sooner.

Yes you can choose matte or shiny, or a mixture of both. Just make sure you specifiy that in our conversations about your set.

Because each order is handmade to the specifications that you provide we are not resoponsible for you not liking how the design you picked looks.