just click on the red bar, then a window will pop up: 1) write a pen name (or your name/they just ask for a pseudonym) 2) select an age 3) first button is 'Male', while second button is 'Female' 4) your 1st artist choice (put 倖田來未) 5-8) other artist choices (try to pick random artists like MISIA, OLIVIA, BENI) instead of other big names so more chances for Kuu!) 9) the song you want your artist to sing - please put "Go to the top" so the single can get promo!
then its the first button of the left to complete your submission, it will then appear what you wrote and click again the first button of the left to send your submission and its done (it will appear they saying your submission was a success)! its easy, please lets do our best to vote for Kuu