Thanks for the kind comments everybody. Unfortunately, now that i see the design online, i realise that it is not something threadless will ever print. I still like my illustration but it's more something for in a children's book than for a tee.
I really do love it! For myself, not that I have kids.... I know what you mean about 'printing' it though. Maybe making the balloon bigger and moving it away from the design, would let you move the placement down, and draw more attention to the adorable balloon. And that way the eye would move down the tee. Anyway, 5 from me, light blue tee for sure.
About my design
Turned it into a t-shirt design for children or bikers with a mustache.
Bigger version: http://three-ring-circus.deviantart.com/art/So-I-guess-this-is-goodbye-114886405