These layout suggestion and layout re-do's were done as a part of Course 1, Lesson 8A, on Visual Weight. I invite you to be brave and participate by senidng me a layout. It is how I learned to grow in skills, with others giving me suggestions.
1. contrast - I can read the text okay. Has a little trouble with the fancy title, but after about 20 seconds figured it out. You don't really have any big contrast going here at all that helps bring the eye to the photo. Your papers and mats are about the same as the photo (none much darker or much lighter than the photo). What is keeping the photos the focal point is the photo's size. If the photo were smaller, it would be lost.
2. size- this is the main design principle keeping the photo as the focal point. The one pink crumpled circle just below the photo to the left feels a little big to me...it's the second thing my eye goes to. Do you want this? Maybe your title or text should be where your eye goes second?
3. color - The papers have a nice color palette to them, but there isn't really any color working to bring any visual weight to the photo.
4. shape - not applicable.
5. texture - you have lots of patterns going on here and that would be considered "texture." It feels a little busy to me as there are no solids mixed in, but once again, because the photo is so large, and because the papers have similar strength color and lightness/darkness, the photo has the most visual weight.
6. isolation - not applicable.
7. value - some of your elements have value, especially the cute banner across the bottom, but other than the one mentioned above (crumpled circle), they all seem to be in check.
8. balance - The layout is balanced, although it feels a little too center balanced than bottom weighted. The banner being across the bottom does help to weight the whole layout down.
...bottom line is that your goal is to keep the photo as the focal point and you did achieve this because of its large size. Therefore, nothing really needs to change. However, there wasn't many of the other design principles "working" in this layout for me to comment on.
As you continue to create our layouts, I would suggest that you continue to keep these principles in mind (maybe make a simple list of them next to your computer) and try to apply them to your layouts to stretch yourself and teach yourself how to use them all. It may change your scrapping style a little bit and that may be something you want or do not want