I decided to leave off the pom pom as I like the look of the graduated colours on the crown.
I have summarised some of the details below to help if you want to have a go making your own peerie version.
Needle size: 3mm for the entire project
Gauge obtained: 26 stitches and 34 rows over 10cm.
Finished size: Around brim: 42.5cm; from brim to centre of crown: 16cm.
From brim to start of decreases: 11 cm. If you want to make it a bit bigger for an older child, you could add in a few extra rows either above or below (or both) the sheep.
Knitting it as I have done here would fit a child aged 2-3, although I find it very hard to size childrens' hats as the bairns I have around me are very different in size even though they are the same age! You might be best to get the measuring tape out.
We are still very much enjoying seeing your finished Baa-ble hats, remember to show us!
Shetland Wool Week now has a Ravelry group where you can post your project (and enter into discussions) - we really would love to see them!