Hi, a nice piece of work, especially the work on the flag and metalwork.
Only two points: First, and I realise that it's the modelling not your painting, but the right arm looks like it's draped in silk or something (very close/fine wrinkles- not at all like heavy material). Similarly the blue seems far to light and bright: in fact, with the above I thought he'd got the flag wrapped around it.
In his books Dawson shows a sample(albeit 1823) and the colour chart show darker shades:
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