Looking at this JPEG on a color corrected monitor - it appears that there is some serious lens cast just above the half way point...i.e. alternating bands of green and magenta. You could try to get rid of that in Raw Therapee absent having a lens cast DNG file...and then going through standard LR workflow. As well there is banding in the sky and an odd color fringe element on the clouds. There doesn't appear to be any point of focus...maybe that was planned. This image is not a very good example of the possibilities either with subject or with multi-image process - I think I would try it again