could it be blank?

i wonder i cant even start a thing on this big canvas....anyone can help me ^_^
its a bit big, but its a good quality of canvas...ready to be spilled by colors...
let be the right mood takes place so i can begin.

since the time i have this big canvas i think i should make it by heart.
but do u think it would be beautiful if i only use one color? yes im using only black....
black the symbolize sadness, well as for me let us see the result of this artpiece done by art with heart..