Kagamine Revolution

It sucks living in England when you're a Vocaloid fan, there are NO shops that sell anything related to Vocaloid, or at least not within a 100 mile radius of where I am and everything I buy off the internet takes forever to get here because it's from AMERICA or AUSTRALIA or JAPAN!!! And then it costs so much!!! So I decided to try and draw something that I could put on my wall and, so an inexperienced eye, would look like an actual poster. Whether I succeeded or not I don't know, all I know is that the posters I've seen are so much better than this so I think I'll go curl up and cry now...

I'm still learning Japanese and I haven't been doing it very long so I've had to use my basic knowledge of the grammar and an English to Japanese dictionary to figure out the kanji, and then my writing skills suck so it might end up saying something like 'a penguin ate my shoes today' rather than ' green is the enemy'.
Far left: 'I'm not a shota!'
On the left side of road roller: 'Road roller'
Centre: 'Revolution'
On the right side of road roller: 'Green is the enemy'
Right side of Rin: 'Time for change!'
Top right corner: 'Rin . Len'
If there's something wrong with the writing, please tell me so I correct it in the future!!!