I would say that you needed more. What weight did you use? I probably would of went higher up (from what I can see)
If it was 0.5 and you used 100 that's way less than a full head. They should be close together and I don't leave a layer. I use between 150-200 bonds min 0.8gThanks Aphrodite26 for feedback first ) the client actually already bought the hair and I it's fitted them for her. The ends are quite thin so I'm definitely guessing they arn't double drawn, as you can probably tell. It was 18' and I would have said around 0.5g and I used around 100 bonds, but that is a guess due to the client buying it herself. I really couldn't have gone any higher, if I did it would have been one more row at max as when I put the hair down her short layers was barely covering the bonds.
Do you think I should have fitted them a little closer ? I was told that I should have not left any gap between rows but in training, got told to leave a thin layer due to a more natural look.