It look great Amanda, good job.
As with your other collage, I like the blending between elements but I don't like that we can see through parts that are important...it lessens their impact.
For example, it looks like the shadow of the old man is under the hands in the lower left corner...we don't care about the shadow and it's really hurting the image of the hands. Also, I like the blend between the road & the aerial shot, but I think the car should be less transparent...it's distracting to see the diagonal line of land through the car.
I love the blend of the map on the right, it's great.