Preparing an earlier page for colouring - page 6

This page was originally contained drawings pasted from my original version, though I previously redrew the two faces in panel 1, and the figures in panel 2. I'm wondering if I could get away with the figures in panel 3 - although noticeably less good that where I have used MS5's 3D models (e.g. panel 2) - they are pretty tiny, so I might get away with them, or a quick re-ink without posing models.

The drawing of the rider reflects my use of high 'stabilisation' at first, and so looks slightly incongruous, however, it is Salimbini's imagined image (one could fairly say 'fantasy image'), there is a logic that it is more stylised, as with Uccello's (un-named) wife's differently imagined version of Uccello's painting on the previous page.
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Below is the page ready for colouring. In panel 1 I redrew the male face, the horse, the plinth and the arch. I redrew panel 3 entirely.

And below is the flat coloured version. It looks a lot more coherent that what I started with. some of the adjacent colours are too tonally similar, but i hope I can fix that at the toning stage. There is a lot of  single flat colour on this page, but I'm hoping that adding distressing/texture will address that.
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I'm thinking now that for panel 1, which is already an imaginary scene, I could add as perhaps a translucent overlay of an imagined landscape - perhaps san Roman as seen in Uccello's paintings that are the subject of the story.