Choose the caption bubble to begin. If you want to upload a custom bubble or alternative image then submit the caption first, then edit the comment and attach a "Place img". Once the image is approved you can use it by editing the caption again.
Oddly, this was shot at 1600 iso, hence the grain on the picture. No flash and no real lighting in the tourney area makes pictures very hard to take :) (1/15th shutter ftl).