Hang-yu,
The sculpt is really nice, but is that supposed a Knight of St John / Hospitaller? If so, can we update the paint scheme?
By 1250 they had moved to the scarlet surcoat. Leaving the cloak black is OK, but I would have the horse’s caparison and the knight’s surcoat red.
That Maltese Cross was awarded to celebrate the victory at the Seige of Malta nearly 300 years later. I can send examples if there is time to fix it. I would love that figure if it was correct.
FYI, I believe I recognize the picture/drawing you are trying to recreate (which I also think is really cool) but the Hospitaller is incorrect in it as well.