I spent a long time going to charity shops and bric-a-brac shops to find old tins of pins. They had to have a large head and it seems that only old pins have this.I lost count of how many I used and how long it took to insert them all. The pattern I made was of large peonies, leaves, snails and Death's Head hawk moths.
The base was made to hold the corset as if it were on a dress stand but so that you can see inside and view all the pin shafts. They form a wondrous fur-like texture in some areas.I wanted them to rust into position but they seem to be too good a quality for that !