Smoothing down adhesive stickers takes practice and finesse.
In general, it is best to start in the center and work radially outwards.
Flat surface to flat surface, you can sometimes start at a corner and use a straightedge to move across in a line, but that will not work here because your are inset in a depression.
My first try, in your case, would be to bend the sticker around a cylinder (ie my index finger) and touch down in the center. Then I would sweep sideways each way, then vertically each way, then diagonally.
Keep each stroke firm but gentle, and remember not to stretch the sticker unevenly in any direction.
Once down, I would burnish outwards from the center in a spiral, with a fabric layer on my finger to reduce friction.
Thanks for the explanation :)
Well, you know what they say about opinions...
Okay I'm just kidding about your personal text :p
Show Image
(http://i.imgur.com/DxX56A8.png)
I really like this one. However I think it would be cool if you put your name in the upper right/middle to add some personalization to it. Also how do you plan to make the stickers?