Rikka A little hint for you.
The reason you're getting that seam is because both sides the colours are not going the same way.
Like they are not matching to each other wich will cause a line at the back of your head.
Eh, I consider my sets decent but I really don't think they're 100k quality. I'll increase the prices a little since 20k a set is really cheap, but 100k+ is still a bit out of my reach.
Thanks for the compliment though ;]