I'm glad you asked Soup
The editing wasn't quite as straight forward as it may seem on the face of it (it was an exercise for me to use different tools), which might be best illustrated by this pic, which
is a basic exposure correction :
So, here's what I did to get the panorama :
Flipped it, as I felt the FG flowers + the isolated tree (being the main focal points) looked better on the RHS
Cropped the sky a tad, just to tidy away the half-clouds at the top. Cropped quite a bit off the bottom to bring the middle ground into perspective, as the FG was too overpowering.
For the exposure + colour corrections, I isolated each section + worked on the pic bit by bit, not on the image as a whole, as I felt that different parts of it needed different treatments. Yes, most of the work was to do with brightness/contrast, as the colours were generally good as they were.
Colour correction: I altered the colour of the red flowers to make them bolder, so they'd stand out more. Brightened up the white flowers, to make them stand out too. I did all the flowers using 'selective colour' adjustments. I also dodged a couple of the clouds on the RHS + also increased the brightness of the sky on that side too, to equalise it with the sky on the LHS.
Detail Extraction: I clarified each part of the image separately to bring every inch into 'sharp focus', including each line/clump of trees, the far hills, the different patches of vegetation, to enhance each one's separate colouring, shading + detail, as well as the FG, + I brightened the green grass around the single tree to make it stand out, + I brightened + saturated the green patch on the LHS + increased contrast to give it texture.
Due to my inexperience, this all took a good coupla hours to get it how I wanted it.