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 white text okay. The white border is okay if you are contrasting the darker grass to make it pop, but if you want the white flowers to pop, a dark border would work better.
2. size- Your photos are large, but then again, there's not much else on the page to compete with them.
3. color - The pink, purple, and white seem to work well togethre.
4. shape - not applicable.
5. texture - not applicable.
6. isolation - not applicable.
7. value - not applicable.
8. balance - The layout is not balanced well. There is nothing grounded, so see the video I just put up today (per e-mail sent). You are top heavy with the large photo at the top. As the tutorial indicates, getting in the habit of putting the larger things at the bottom makes layouts feel better.
Overall, there really isn't much here to evaluate. It's just two photos and a title plopped on a background with borders on the photo. I'm not sure what you can learn with such an evaluation as this. In addition, please review the special drop shadow tutorial.
Maybe you can re-do it and add many more things to it, such as other elements and journaling and matting. That would help you learn better.