Okay so your starting, and just saying its a decent try (not good).
http://i51.tinypic.com/11hrngx.jpg
1: The point of the dagger isn't a point, make sure thats realistic and not letting it go like that, it must go smooth.
2: thats not how a guard looks, do some more research
3. the handle is the part you barely gonna see, if you wear it in any game a hand will cover it, and for gunz you wont even notice it. Don't invest faces on that part of it, a dagger for GunZ should have max 200 faces, unless its a special one. Try to invest poly's / faces in parts where it can be seen and where it is important.
This is me having a good day, thank you and thank me.