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.
There is more then i tought i would be but i guess many of them are old quakers. Alot more people here today.(final day) I will try to show that in some pictures i will be uploading soon.