Did a little noise reductin with Neat Image and then increased the brightness a bit, with slightly reduced contrast. Lastly desaturated the yellow channel a tad to reduce the impact of the green background.
You mentioned the noise in the BG so I have made a workshop with Neat Image. It is efinitely worth investing a little money in a downloaded version of this programme. I applied the noise reduction at 75% in the luminance channel, followed by a little sharpening in Photoshop with the unsharp mask at 80/0.3/0. I also cropped a little off the bottom to get the result under the 300K TN file limit. I hope you find it useful.