Those both will make a nice pot call. Make sure you get it cut and sealed so it won't split up on you too bad. I would take the maple and cut it into about 2 foot pieces and then leave it on the ground and cover it with some leaves or grass clippings for about 3 months. Then cut about 2 inches off the end and look for spalting. If it is getting some good spalt lines in it, take it in and cut it into pot call blanks and let it dry for about a year. It takes a long time to get wood built up, but well worth it when you can get some pots made and get a hang of what your doing, then you can get into the good stuff like spalted maple. Hope that helps you out. As far as pictures, you need to get a photobucket account, and use them to download pics. It's free and easy once you get the hang of it.
Ryan