All needed is to receive a sure image of your palm. If you prefer, you can try first emailing to yourself or a friend to make sure it works.
The best and most clear way to copy your palms is by scanning your palms in an scanner hooked to your computer. Put the cover over your palm, do not press down; too much pressure will flatten them removing evidence of lines, including skin patterns. Then do one copy of the top of each one. It is very important that the lines on the little finger side show up. Then you have to save the images as JPG files and then attach them to your email and send them.