Applique is a user-defined topic, so you put your post wherever is appropriate (main, pictures, etc.) and then link it to the applique section.
How do you link it?
If you're the author of the topic, and if the Applique category is set up to allow authors to link to it (which most are, I think) then up at the top of the first page of your topic there should be 3 tabs - "Bookmark", "Watch", and "Add to Topics List". Select the "Add to Topics List" and you will get a list of the user-defined topics. Select Applique.
Thanks Dunster. I didn't know how to do that either :oops: