I would suggest using a texture for his clothing that has some earthy colors like perhaps, the bandit mage or the using some elements from the beast master like fur on his shoulders. In my opinion that is what a geomancer should look like but, this is still a good model so 4/5 for now.
Oh and about the blade thing I thing maybe some type of talisman or some thing would look good like, some type of magical looking trinket.