Sound slike you’ve got a good base layer. As for how to add to it:
[ul]
[li] a sash. You don’t need to sew this, but it will last a lot longer if it has hemmed edges. [/li]
[li] a cloak. My favourite one is an old grey army blanket with the coloured edges unpicked, worn rectangular-style. You can buy cloak pins over the net, or make them yourself (a $2 pendant from the Warehouse or Spotlight, a big kilt pin, and some superglue works wonders)[/li]
[li] robes: there’s a simple design on the Empire wiki here (requires basic sewing, but a friend should be able to whip these up in an hour if you provide the fabric). There’s an Odyssey £30 Kit Challenge which has some good ideas. Or you can use a chiton, which is basically a long piece of fabric and a couple of pins. I used one of these for [i]Insubstantial Pageant[/url], and it looked pretty good, despite being very simple.[/li]
[li] bling: if you hunt round on Trademe, Etsy or Ebay you can find cheap jewellry to match a costume. Or you can assemble it yourself from components from Spotlight, or make it with wire, pliers, and a steady hand. Rings, chains, broaches, and cloak pins are good accessories.[/li]
[li] footwear: depends on the character. Seeker Boots look cool if you can get them in your size, or you can often find leather riding boots on Trademe for ~$50. You can buy cheap vinyl turnshoes over Etsy, which look cool but are slippy and really only suitable for indoor use (also, as turnshoes have thin soles, careful what you walk on in them)[/li]
[li] headwear: you can make a traditional wizard hat by stretching a felt cone. Or you could go with a rus hat, bag hat, or simple arming cap.[/li]
[li] belts: cost $2 from the sallies. You’ll want one to hold your pants up, one to stick your pouch on, and maybe one to put your weapons on if you have anything more than a dagger. Can also be used as random strapping on other things.[/li]
[li] pouches: you can acquire a suitable handbag from the sallies or over TradeMe, and either use as is or chop the straps and add belt-loops to the back (rivets are your friend here, but superglue will probably work just as well). Small pouches are easy to make from scrap leather or cloth (take long rectangle, fold in half, sew sides together, turn inside out, punch holes for drawstring). I can’t sew for shit, but because these are all turned inside out, it doesn’t matter. Scrap leather is dirt cheap over trademe - you can get a big bag of it for under $10. [/li][/ul]