Elmers Craft Bond
I love this glue. I use it for all my permanent scrapping and card making needs.
First put a small line on back of photo, flower etc. of non-permanent glue and affix them where I want that changes can be made. When I am sure I'm happy with where I want my placement I use Elmers super permanent glue. I love it. It has a nice strong bond. Never failed me yet, and my cards and scrapbooking stay with a firm. bond, Great for layering.