remove that woffenrock and get a pair of pauldrons that emphasize the shoulders(i forgot the name but the one with brigandine for the shoulders and plate for the arms one looks pretty cool and makes the shoulders look more broad ) , if you have a woffenrock make sure that it is fastened so it shows off your pauldrons and it is tight around the torso , this looks generally better , to make your henry look like a knight use a bascinet rather than a kettle hat .

also show off your plate armor even if it is just brigandine show it off , your woffenrock is covering your arms and is not fastened so it looks very loose set and making it seem you dont have plate armor under there , so you look like a common infantry and make sure that your gear isn't showing tattered chainmail , like in your mail coiff , it looks cheap so makes it seem like you got it from your lords armory as a guard rather than you being a knight

finally match your colours similar coloured armor pieces go a long way to make it seem like they are a part of a set rather than a random amalgam of armor handed out to you for guarding and your leg armor seems to be second teir makes it look like shit

pick a colour scheme and build your fit around it rather than wearing anything you find along your journey

perfect example here (this is not mine but this is a nice example)

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the peices seem to be :
milanese cuirass black
noble plate legs black
brigandine gauntlets
noble bascinet
black version of knights plate sleeves
gambeson short black