This screenshot was taken from my instagram stories. Its something a-lot of people don't realise until that faithfull day. "Wait a minute, why did this girls braids take soo long and I just did someones else braids, same size and length and it took away less time". Its because the persons head you did was very big. Just like different feet sizes, there are different head sizes in adults. My own mother can wear children sized crochet hats, while I can't because I have an average sized head. But I do have very small ears, tiny wrists and ankles.
When it comes to head size, you will never know until they sit down infront of you. You will realise that they need an extra row and also an extra braid on either size. If their hair is thick, well sis good luck!. Means more time and more thought into making sure you dont use too much braiding hair on their head, which will make their braids very heavy. Braiding is an art and skill, its very particular and bespoke for every individuals head size, hair texture etc etc.
Now! the only way to know if their head size is bigger or not, is to get them to take a measuring tape and tell you the circumference of their head before they come into your booking. That is the only way to know. Its also up to you if you want to charge extra for this. I never charged extra, I just bucked down, cried inside and did my job. That was my choice. But you can choose to charge an extra $30-$50 to your job depending on the size of the braids and length etc. Totally up to you!.
f you have really good skills, then that helps because people will know the braids will come out bomb, so they wouldn't mind (if they know beforehand) parting with a bit more $$.
Take care :)