The lower scan of Dirk is pretty poor so I decided to do a redraw of him which would allow me to fix the other issue of him being out of register with the background. Red circle.

I now have him on a seperate layer and all of his solid fill colours are seperate too so i can tweak them easily.
Here he is redrawn and repositioned Vs the original. Quality and detail are much improved I think.

I will be adjusting contrast and colours at the end.