you could use ace bandages for the wrappings, just make sure you're wearing some kind of slip on shoes as the bandages wont protect your feet should you step on something.
as for her skin color, you can buy a zentai suit which will cover her legs/stomach/arms and then you'd have to find a makeup to match for her face or blend to the same color or you can just use straight up makeup (which is time consuming but looks nicer if done right)
skirt material is up to you. take creative liberties or base it off of Egyptian culture and what they actually had for fabrics back then or what not. again, its up to you what material you want to use.
her necklace you'll probably have to make or find someone to commission