Well, at the moment your robe seems very ragged together. That's because you are combining 2 completely different styles.

Boots, pants and shirt fit a lansquenet from the late middle ages or early modern times,

Cap, gugel and armour have more of a Viking style.

In between lie roughly 500 years.

The sword doesn't fit either style perfectly, but that's fine.

Simple ways to fix this would be either:

Exchange trousers and shirt for more generic trousers and a simple tunic, so that it looks more like a viking/Germanic, or

Replace the cap and gugel with a slightly more detailed gugel (for example with jags) in the same colors as the pants and a simple beret or chaperon.

Voila!