I decided to make a smaller orb and its color is hot pink. For my second attempt, the yarn was not sticking well to the balloon. But it all ended well and was hung outside to dry.
I made my third attempt, smaller than the second and its color is lavender. It did better than the first two attempts and the yarn was more compact and had hid the holes, best among the three.
***Verdict: If you want to do a balloon orb, try it small first to get the hang of it. Here are the measurements for my three attempts:
1st: 6.5 in
2nd: 4 in
3rd and Final: 2.5 in
***Also, try using 2 bottles of white glue instead of just one. Buy thinner yarn than the thicker one because it would look better and would wrap the balloon completely.