No problem, if you ordered the wrong size or measured incorrectly, you can always buy a replacement for the ill fitting nails! Just message me and I will quote you the replacement nail price & remake your missing nail. Please note that colors may change or fade over time, or I may be using a different batch than was used to create your nail. I am not responsible if the wrong size is ordered. So, it is important to read shop policies, sizing information, and measure carefully before ordering. I also offer "fit Kit" sizing sample packs in shop to help you can find the perfect fit.If the size is off on a nail or two I suggest purchasing a "Replacement Nail" option from the "add ons's" menu.