This is absolutely amazing! Could I use this for the J-Core group I am helping? They're called rAmen Break and they used to be on Digitally Imported on the Hardcore channel, but switched due to mistreatment. I am developing their webpage and they need some artistic content just like yours to improve what I can do for them. I would love to use this, and I would love it if I could get your approval of the banner I use this for as well.
Actually, Hatune is a romanisation of Miku's surname using another romanisation system. Hatsune IS the official romanisation of her surname, though, so you are technically correct. I do agree with you that this picture is amazing. By the way, I love your icon!