Stamps and paint can help the eye to wander and to create flow, they assist in creating shape and extending extend lines, and they can also fill empty space plus add beautiful texture.
When choosing digital stamps for your pages look for variety. Select different stamps to add texture and interest and those that will draw out areas of your composition that already exist.
For variety look out for text fragments, splatters, defined pattern stamps like stars or dots, scribbles and abstract marks that include lines.
Study your page and look for areas that can be 'drawn out' by adding some stamps. We can exaggerate lines or areas by making them longer or wider by adding marks and stamps
A good ephemera cluster doesn't detract from your photograph or main focal point and is great for adding contrast and depth. It can also help to create shape and movement when paper bits are stacked and are lying at different angles with each other.
Consider your colours and ensure they compliment or just add some needed contrast to your photograph or the main focal point to your page. Neutral or monochrome colours are a good starting point. Again, consider using a variety of different types of ephemera to add texture and interest.
For variety within your ephemera type elements look for tickets or papers that contain text, and then also items that have pattern or print. Personally I love to add pops of black and white for contrast but it depends on your page what will suit, it's just a matter of experimenting
In my page I have used the paper scraps/ephemera to add a little extra height behind my photo and to create depth by layering at least three or four paper items. I also took the liberty of a few extra little things peeking between my clusters and a piece of fabric poking out of the side to add a different texture to the paper stacks.