3D Composite and Rotoscope in After Effects

original shot of me walking in hallway, shot handheld and with very similar colors to subject in background (rotoscoping hell)

using the rotobrush tool, I painted out my outline in every single frame (frame rate 24fps)

without any background I brought the video into a composition

I then added a background and scaled it based on the correct perspective

Lastly, I added a new sky and rendered out the video

First 2D Composite in Composite

After removing the sky in this shot in photoshop, I brought the PNG file i created into Composite. I then resized the picture because its dimensions were too large, and brought it into blend and comp.

For the sky background I used a separate picture, and followed the same steps (minus photoshop) as with the foreground image.

This was the final resulting 2D composite.