Drawing! - Trying a perspective

Drawing from a certain angle is really difficult so when I base my drawings on a perspective point of view, it takes me twice the length of time to finish the pic off.

This pic here depicts an angle of looking down from a high place.

I sorta roughly and quickly drew this pic whilst listening to 'Circus no yoru ni' by Megurine Luka and it depicts a girl looking up at a passing balloon.

'Circus no yoru ni' - Enjoy the mp3. (translate page first to find the download link)