do you know how to use sessions? or if its small amounts of data you can do this:
form1.php - > fill in the data
go to form2.php?data=something
then on form2 write:
$something = $_GET['data'];
that means you can pass a variable piece of text such as the location of an image in the address of the page.
but sessions are best. ask for help with sessions if you dont already know them.