how to make this
first i open a page with 500x1500
then i copy the picture i want to this page.
then i open another one with 500x750
and then o copy the picture of (500x1500) into the 500x750. first i save the one hald of picture and then i save another half. i save everything in file (PNG) and when i uploud it to tumblr i use the photoset of two pictures (one up and other down).