like I said before, I absolutely love it!
But, for the baloons, if you would like some help, find a lot of references with the same light source, and go from there. Make sure you are working on the shading based on where the light is coming from. Also, maybe make the edge of it more defined?
I personally think they look stupendous and that nothing really needs to be changed ^^ but if you want help, that would be my advice.
Great Job!








