You will need the following:

1. Some kind of padding, you will need a piece larger than your wooden disk - I am using leftover cotton quilt wadding but you could use felt or anything a bit squishy and not too thick.
2. A piece of felt cut to size of your wooden disk.
3. A wooden disk large enough to fit your finished design - I am using bear joint disks, they are easy to get from bear suppliers and you can buy bulk bags in a single diameter.
4. A brooch pin - this comes in two parts, the spike which looks a bot like a drawing pin and a locking back to keep the brooch on, I mail ordered mine from an online jewelry supplier.
5. Your finished embroidery cut with enough fabric left around it to wrap round to the back of the disk.
6. PVA glue and some kind of super strong multi-purpose glue (I use Tarzan Grip)
Firstly glue your wooden disk to the padding using PVA glue - leave plenty of padding round the edge.

Run a line of glue around the edge of the disk.

Press the padding round the sides of the disk and hold until the glue takes over.

Once glue is dry, trim away the excess padding.

Now glue the brooch pin to the center of the disk using strong glue and leave to fully dry.

Now center your embroidery over the padded side of the disk - you will need to be careful not to shift it around too much during the following process or it will end up wonky.
Put two blobs of PVA glue on opposite sides of the disk.

Wrap your embroidery around the disk and hold until the glue takes over.

Now you will need to put cuts in the embroidery next to the two glued areas - be careful and stop the cuts before you get to the edge of the disk or else they will be visible when you are done.

Put two more blobs of glue on the disk at ninety degrees to the last two and again wrap the embroidery around had hold till the glue sets.

These flaps will also need to be cut like the last two.

The last four flaps can then be glued down - you will need to trim them to reduce bulk and make sure they do not show.

For those of you familiar with clipping curves when sewing, we are effectively taking triangular notches out of the edge of the circle of embroidery fabric. We don't do it first because it is too easy to mess up and end up with visible cuts and edges. The number of flaps you will need to glue down depends on the size of your disk, very small disks (i.e. 20mm) might only have four and larger discs could have more than eight (this tutorial used a 45mm disk).
If you end up with corners on the edges of the brooch you can ease them out using a bit of glue and then sort of squishing the fabric towards the back of the brooch.

Make a hole in the center of the felt circle using the brooch pin - do it before you put the glue on it saves a lot of potential mess.

Put PVA glue all over the back of the brooch and apply the felt. Once dry attach the back.

You should now have a lovely brooch - IMPORTANT NOTE do not let it go through the washing machine the disk will not survive.
