1. How can I use COLOR and VALUE to create an emotional reaction in my audience?

Well my idea behind this design was to get a kind of hallucinating or "tripping" feeling for my audience. The vivid and bright colors in the background really help display this, as well as the glowing prism.

2. What selection SHAPES will best relate to, or react with the image I chose?

The rainbow within the prism definitely has the best reaction.

3. How can I have a FOCAL POINT in all this visual craziness?

The pyramid definitely is the focal point