Today finally figured out how to make background on images with Pxlr transparent. You do it from the beginning, the option is there you will see it. I made the image ten times the size of the dimension I wanted it. When I saved the image all I had to do to edit image was remove a zero when editing. In order for the transparent image to work you must change saving image as Jpeg to Gif else the background becomes white. Its very simple. Adding images is good with a paint brush. I thought about adding a photo in a bubble by lassoing image first before adding to the transparent background but never got around to it. You could even add a ring around it or a horse shoe so you look like one of those gurners in gurner competitions. Have fun.