Thanks, yes it's all my own work, copied from original Roman mosaics. The Bull & Elephant is a copy of the original in the Vatican museums.
There are a number of books on mosaic work, it's very simple in principle though but how good you get is really down to how many you do and with Roman mosaics there are a number of set Rules to the way they set the patterns. Like Victorian geometrics (and I'm only going here on what I've read on here and other places on Vic. Geo. stuff) there are ways to do it correctly which you won't see unless you know it which case you'll spot any errors straight away.
If you want any help with the basics to start off let me know and I'll send you out a info. sheet.
The jobs vary, not much commission work around as clients mostly want 'modern' stuff which I don't do. When I get them they are mainly insets in floors from 305mm x 305mm up to 2m x 2m. A lot of my time is now spend teaching or supplying cut marble and kits. Commissions are very nice when they come in though!