[...] I'd love it if any had any ideas on how to improve this image.
Hi Jon,
Looking at the first attachment, and I'm not familiar with the actual scene, it looks like the Pitch parameter for the Panostitch was not correct, which resulted in a curved horizon. That's easy to fix by either visually dragging the center of the pano in the Tools>Panorama Editor (CTRL+E) down a bit in "Edit Panorama mode" from the toolbar selected, or by manually entering a pitch offset in the Numerical Transform dialog field in the editor (each click adjusts by the specified amount).
To automate the process, one can add multiple vertical control points, if the image has such, before optimizing.
Having a projection distortionless starting point will reduce the amount of postprocessing (warping) to get the visual effect that's required. I find Affinity Photo's tools for warping very good, but I know Photoshop also has several tools for that (even Lightroom has an automatic UpRight function for it, if I'm not mistaken, but that can be hit or miss).
But it's best to get the Stitching part closer to where you want to go.
Cheers,
Bart