I noticed this post yesterday but decided to leave off, wondering what problems others might see.
There are still issues with:
1. Anatomy; I agree with Mike. The Knight still looks squat. His feet, e.g. the left particularly, are also probably too large compared to the rest of his leg. That might contribute to the impression I get.
2. Drapery; I don't find the folds in the clothes convincing. Getting clothing right will depend, in part, on getting the underlying anatomy right as well.
3. Lighting; the shade/cast shadows in the folds of the clothes don't appear to match the character's shadow. In some places it looks as though there are two light sources. The problem may be the shadow itself.
4. Armour; for a Poor Knight of Christ, or a Knight of the Temple of Solomon, his armour doesn't look right. I think you ought to research chainmail, platemail, and weaponry. In general, I think Templars would be unlikely visitors to deserts simply because European styles of warfare didn't adapt well to Turkish or Egyptian terrains; their armour was often too heavy, cumbersome and they were slow-moving.
Sed fugit interea, fugit irreparabile tempus.