When taking the photos, I stood in front of Doe Library at night, and took several photos from one position. I also took photos from one position in my room, rotating to capture all the images. Lastly, I took photos from several locations of the wall on Oxford Lane near Replica Digital Ink.
In order to recover homographies and warp the image, I calculated the H matrix using the corresponding points in each image, and then did a projective transformation using that H matrix. This shifted the second image to align with the first. Then, I blended the two images together via averaging.
Here, I fixed the middle image, then aligned the left and right images with the center image, using the warping process from above.
What did I learn? You can pretty easily warp one image to align with another by finding the right 3x3 Matrix. However, blending images into a nice mosaic takes a lot more ironing out, and can be difficult when trying to have a smooth blend, include the entire transformed image (and not have part of it cut off), and blending multiple images.