Nice descriptions. An old master’s perception of his student would scrutinize as such, I’m sure. He might be a tad to thin however; in the second sentence of last paragraph, you used it twice. []o)
I would replace the comma with a semicolon in Now he moved with sinuous grace, no that wasn’t right. Or possibly even make it a separate sentence. Also the sentence He’d always moved when and where he wanted to move and struck without hesitation. seems a little awkward to me, maybe change it to He’d always moved when and where he wanted to, moved and struck without hesitation.
Other than those distracting grammar things, excellent.