Collage - Work in progress

Not sure what spurred me on to do this but each year i keep my Christmas cards with a view to doing something with them, in the past it was the predictable lets cut them out and use them for tags. Last year i had a go at recycling memories by making up a boxed card which is the small one above. So i thought I'd use them for a collage and i have grouped my cards into themes and this is my starting point. Not quite sure where i am going with this yet. The two front pieces aren't yet mounted but the main collage at the back is complete. There are a couple of pieces that are mounted away from the background with silicone glue and there is still room within the frame to maybe add something else but i want to be sure what before i take the glass out and clean it. I would really like to spray the outside frame and distress it but sometimes i take things too far and they become a bind but we'll see where it goes. Be interested in your opinions or suggestions...