@sdua, yeah, for the website you just click the pattern and at the top right corner it should say "add photo" and u just click that and choose/take a photo. im not sure if its the same for the app...
@francesca5 this is my first time submitting a comment so sorry if someone already answered lol but i usually do about 5 or 6 depending on the wrist! sometimes even 4 for a small one