Almost done with cleanup (for the main shot at least). For most of the tracking markers I created cards although there was a lot of colour grading/other transformations that had to be done. However, one of the markers is obscured by a card which is in place to mask BB8 before it exits the bin, so I had to use another method. Using a rotopaint, roto, premult and merge node I painted out the marker with the ellipse-transform clone which filled in the area with another bit of carpet. Then I tracked the marker with a tracker node and copied and pasted the transformation keyframes. I had to manually rotopaint the last few frames (when the bin falls and obscures the marker) out with fresh nodes and then the original rotopainted card works for the rest of the scene. Basically, none of this is as straightforward as you’d expect! I’ve placed lots of cards and rotos around the wall/bin; there’s a lot of little problems with shadows etc. as mentioned before. It’s a lot cleaner now but but a long way from perfect. Still, learning a huge amount.