followed tutorial to make my first balloon.. later moved it to a blue shade using adjustment layer
step 2 of 6
placed the earths image there for size proportion .thought North America would be recognizable
step 3 of 6
began adding the balloon groups 1 at a time to fit.. occasionally I could do small combined groups like the edge..
step 4 of 6
it was just time consuming ..here I have merged the layers so I could burn and dodge to give the lighting effect
step 5 of 6
now I added the larger balloons
I could still go into my balloon group and erase and redo tails to keep lighting and give direction.. u will notice I have yet to set the main balloon tail
..I did not like the look of the round earth so warped it to fit
step 6 of 6
tail is fixed ...stars/balloons for depth is a noise/Gaussian blur/histogram adjustment
masked main balloons for edge refinement little shading
.. add lens flair to main balloon.. should be pretty well done