Kagamine Len - Vocaloid (Keep it a secret)

I was listening to kagamine len- spice and also valshe- migikata no chou then, i suddenly got this idea~~ it's a picture of len saying

" Himitsu ni shite kureru? ato de tappuri gohoubi wo suru kara ne "
it means " Can you keep it as a secret? i'll reward you afterwards"

OMG, i'm bad at english~ it was supposed to sound flirty haha anyway, it's my first time drawing this kind of picture^^ about the background, i was supposed to color it all but using only a pencil was so difficult so i just decided to leave it like that ( i can't run out of pencils again, i just bought then yesterday ( T T )) so sorry about that~~