What's your budget like? What's your end goal for the kind of costume you want?
I'm no authority on Fett, but it looks like you're using a Jango ammo belt. You can make a Boba one pretty cheaply with probably a yard of marine vinyl. Cost me less than 15 bucks at Joann's. You can make a pretty cheap girth belt too out of some red rope or white cotton clothesline dyed or painted red. I got mine at Home Depot, cost me 6 bucks. I got the buckles off old belts from a thrift store, only a buck each.\
While you're at the thrift store. look for some vintage looking ankle boots, preferably with the square toe. If they have the elastic sides, even better. You can paint these to look like Fett and they can look alright. I currently use a pair of Calvin Kleins painted grey and black with toe spikes I made. Real metal toes spikes on cheap old shoes.
You might also wanna mist your gauntlets with some black. Mine went from looking like this:
Good luck on your kit!
It all comes down to what you want to do with the costume. Examining the pictures you posted, when compared to the screen accurate version, everything piece of your costume could be improved. If all you want is an outfit that conveys who you are dressing up as character wise at a con, I think your outfit does that quite nicely. Best of luck.
Also consider even just a chest kit from RKD. His prices are super affordable and IMO really opens up this community to more people. Like he says himself, they may not be 100% accurate, but they definitely get the job done well.
Thanks to everyone!
And my budget is pretty low, but I actually tried starting a jango costume. I am gonna use plaster of Paris for gauntlets molds, and fiberglass for the actual gauntlets. Sintra for armor and deluxe jango helmet. Is it good good idea? Once again thanks for all the help!