New panel built for the top of the head. Also aerials modified from kit parts - the small one doesn't need any changes but the large one was cut down and had a piece of styrene rod glued to the end as a locating tab
Main eye piece fitted to the head - made from a shaped piece of 3mm styrene with an indentation milled into it sized to fit a lense from a Bandai R2-D2 kit (a bit bigger than the lens from the BB-8 kit)
I bought the BB-8 & D-O kit for the D-O droid but I'd already built BB-8. Therefore I'm converting the BB-8 to CB-23, the other ball droid in the Star Wars Resistance cartoon. The body is the same as BB-8, just different colours, but the head is quite different and needs some major changes.