:lol: I always like to add to the challenge. But I really like the way the quilting looks behind the applique.

You want a poof. Can you poof by just putting a little batting in the center of the applique and not all the way to the edges or just stop an eight of inch or a quarter of inch short with the extra batting. I have used that method with some of my hand applique. I don't know what the same wouldn't work for machine applique.

Also quilting closely together in the background poofs things.

ok.. what if, you have a thin fusible interfacing, and fused it to a piece of fleece, then appliqued that on? Would that work?

If it's not going to be washed frequently, I know you can use felt to help puff things. :) I did that on a Sesame Street wall hanging for my DD.

Felt! Interfacing might work too. I think I'll have to go to Walmart pretty soon and look at their fusibles.

Here's something dangerous and radical. since it's a wall hanging... Applique your flower, then make a small slit in the back of your quilt thru the batting, backing & top & then stuff some batting under the applique fabric, You can fray check the edges of the slit, then whip stitch a patch over it.

I suggest you go to the Eleanor Burns quilt in a day web site and look at her tutorials. This is how she adds dimension. She uses a method of appliqué that uses a light weight fusible inter facing. She draws the shape of an appliqué onto a piece of fabric. She then layers right side of fabric to the fusible side of interfacing. She sews all around the drawn line and trims the excess fabrics to about an eighth of an inch, she uses a pinking shears to for added give on curved pieces. She then makes a slit in the interfacing and turns the piece right side out. Smooth out the seams so the interfacing is fully on the backside and does not show. You now have a fusible appliqué. To add dimension she cuts a piece cotton batting the same shape as the final appliqué and slips it inside between the fabric and interfacing. Again smooth with a wooden skewer or wooden iron (no heat!). You then can fuse the appliqué to the quilt, overlap appliqués if you need to. You must stitch around the edge after fusing, she uses a blanket or blind hem stitch but you can use a straight stitch or a decorative stitch if that suits you. She has videos to demonstrate which are probably better than I can do. Also if you go to her media page, she has video's of many of her shows, look for one that features appliqués and watch that.

Could you do what Kellen46 said but use polyfill stuffing instead of batting. Just stuff the piece as poofy as you want, then slipstitch the back together and attach it to the quilt. You might have to hand stitch the applique around instead of machine stitching it to the quilt, but it would be poofy.

If you are doing needle turn you can make the seam that you are turning under a little larger and it will poof up you flowers.

As kellen46 says, E. Burns is the way to go.........

This would be my solution as well.