Also smaller versions of a picture are nice. This one just says loud: Give me a speech bubble! ^^
One way to create backgrounds for labels, speech bubbles and / or frames is just paint with artistic water colours on paper. You can see that I am still in love with my shades of brown...
The three upper colours on the left side. Aren't they beautiful just standing alone?
I cut out some shapes freehand (no, they are not perfect ^^) and glued them on black cardboard and cut them out again so they get a little black frame around the corner. You could also just paint a black boarder with a laquer pen.
The little "nails" are dots made with a silver laquer pen.
And then use all the artistic water colours again... I used my three shades of brown and gold. The black paint is an old waterproof mascara ^^ The brush is perfect, nearly empty of paint and after drying resistant against water!
Again the finished one :)