haha, Ok here's how I did it. You have to have a clay gun. Technically the technique is called "filigree". Usually its called "Balinese filigree" and its based on metal working techniques from Bali.Usually it looks something like this:http://www.polymerclaycentral.com/cyclopedia/filigree_egg.html
Most people make spirals and circles and dots that interconnect. I just decided to do a flower instead.
Here's a site that talks about the different kinds of guns you can get. Michaels and Hobby Lobby both have these, I think they're under ten bucks.http://www.polymerclaycentral.com/cyclopedia/clayguns.html
Here's Diane B's site that has tons of info about guns, which are also called extruders.http://www.glassattic.com/polymer/claygun.htm
ok. What you do is, you put a round disc in there and then you put in conditioned clay in lots of different shades of blue.
As you can see from those sites, some people, including myself, do have some trouble pushing the handles of the clay guns in, so what I do is put it on the floor between my feet, put on some sturdy shoes, line up the handles and push it down with my feet. Then I take the clay string that comes out and lay it on a clean tray or table as it comes out. If the string breaks, that's ok.
When you have as much as you can get out, go to the tin.
The tin should be clean and I usually get a little bit of sandpaper or a nail file and rough up the surface so that the clay sticks better.
I started in the middle defining the main outline of my petals. You will also need to have some kind of knife or blade to cut the string where necessary. I just freehanded the outline of the petals, but if you're not comfortable with that, you could draw with a pencil and just lay the pieces of "clay string" along it.
You'll see that the clay comes out all different shades of blue (or whatever colors you choose). Usually the beginning of the long string is one shade and the other end is darker or lighter. I try to use pieces from all over the length of the string so that the colors look more random and its not all neat and matching.
I outlined the first strings I laid down on this so you can get a better idea of what I did.
After I had those where I wanted them, I started to fill in the petals a layer at a time. You can use your finger to push the clay or hold the clay down as you turn it inside the petal. If it looks ok, you don't have to cut it when you turn to do another "lap". You can cut it when you get to the end of the petal and then overlap with your next round around the petal.
You might have to experiment with it to understand what I mean!
Then I just started to lay the strings winding around the outside of the petals as best I could.
When you get to the point where there are just corners left to cover, put a strip of the string all the way around the outside of the tin. Start to fill in between the largest edge of the petal and the corners, until that's all filled in too.When you have the whole top of the tin covered, you take some kind of poker, it could be a pin, a pen, an earring, whatever you want. Then go through and poke little holes into the clay on some of the lines. On other lines, I used another tool to make little tiny stripes inside of dots. You could come up with all sorts of things you can use to make designs with. I've used the side of a bottle cap, the side of a quarter, a pointy nail file, or just basic plastic clay tools you get at the store.
Here's a close of the detail so you get a better idea of what I'm talking about!http://www.clayaddiction.com/clayart/bluefil3.jpg
You can decorate the sides of the tin or leave them the way they are. Some people paint the sides or do this. I put some strings on the sides but I wish I would have covered the silver over a little better. I think if I were going to try to sell it, I'd cover up the silver better. You can also cover the bottom with a plain sheet of clay.
If you have a box with hinges, it becomes a bit more tricky. Luckily this one I have just opened without a hinge. But if you do have hinges, there's a lot about covering hinged boxes at Glassattic too.http://www.glassattic.com/polymer/covering.htm
Well I'm not the best person when it comes to tutorials, so please, feel free to ask any question! I probably left something out that you needed to know!
hope this helps!