I do have some of the parts for this costume although I would like to replace them if I can that can wait for a while so I'll just look for them in the background
I think all I need are the boots (brown ones are hard to find, I might end up with black combat boots), I need to make the hat (either aviator cap or top hat depending which would be better to make from the thick leather I bought) and I need to sew the vest. I do already have a black waistcoat from my grandfather that I've worn in my previous costume but the black would be a bit out of place with this brown aviator.
As for accessories, so far I'm going to have a revolver and a big flintlock pistol in holsters on my belt and thigh, a map, compass and spyglass in pouches on my belt and, if I can, a pair of aviator goggles as well as the small black ones I already have. As a guard I figured I should have a couple of weapons and as, I guess, a "guardian" of my courier I would have accessories that would help us navigate and survive... Haven't thought of any survival things, I'll have a few extra pouches for that stuff I guess.
The guns I'm getting for my birthday tomorrow (they are metal lighters) and I found a suitable spyglass fairly cheap on Ebay. I also found a brass compass really cheap from a camping store where I will probably also buy the boots when they get some in my size (they're second hand and really worn leather).
The main thing I need help with I guess is the vest. I've never done anything like it before (sewing at all really) but I guess in a pinch I could just guess it all... Thinking of making it out of brown denim if I can get it..
I'm also having trouble finding an appropriate aviator cap pattern that I can customize a little. http://splicer02.deviantart.com/gallery/?catpath=/#/d590op1
This seems to be the only photo of my costume I have handy (I'm the guy in the back)
Basically brown work boots, brown jeans, belt with a silver dollar buckle, black waistcoat, awesome pocket watch, white shirt with buttons on the collar, brown leather tie (actually a belt from another coat), leather cowboy hat and my favorite coat
Oh and my ever-present black steampunk goggles
... Sorry I wrote so much here, I tend to get carried away