I hope this helps:

Here is a link to a video Gerry, hope this helps you.

It depends on the design. I went to a class recently at my dealership. We did shadow applique and trapunto. I'll post it in projects as soon as I get a chance. The trapunto was done with a embroidered quilt block design. You will need a design that has tippling around it. Hoop your fabric with a layer of puffy batting, no stabilizer. Stitch out the center of the design. Remove the hoop and cut away the batting from around the inside edge of the hoop to the embroidered part of the design. Float a layer of thin-denser batting under the hoop (you can also sandwich the batting between the hoop and another layer of fabric) and finish stitching out the block.

Here's a close up of the block.

Thanks for the interesting question which has generated excellent replies

Hi Gerry http://www.secretsof.com/content/1581 Annemarie has quite a lot of Trapunto designs and also tutorials, any help ??

Great post, Gerry! Learnt something new today :)

Embroidery library was where I got my knowledge from, but see we have some well informed cutes & more sites to choose from

http://www.juliehalldesigns.com/page/shop/browse/a/category/e/freede

Is this something you can try
I think Tinfriend posted