have seen it used in applique and that was washable

Here is a link that has a lot of info about Mylar just take a look around and see if she has most if not all of your answers
I think one of my favorite things about embroidering is how I discover that my imagination can run amuck
reg embroidery needle
hoop the same as any emb project
I know someone that tried Mylar with an embossed design and had good results
I never thought about trying it in a full applique I think if it an item to be washed then perhaps the Mylar may get pulled away so I wouldn't do it on anything laundered thats just my opinion

Hi Michele, it's nice to hear from you!
I havent tried mylar in applique, but I think it wouldnt work, it would come off when washed. I use universal needles, and stabiliser like a regular embroidery. Basically, all my alpha set that uses motif are okay with mylar. I've been testing them, and look gorgeous!
Maybe with this instruction will be easier to understand the process.
I've purchased mylar from Sharon, Psssst gave a link below.
Love and blessings.

I have had very good luck so far, with hooping a piece of med. wt. cut away stabilizer & a piece of mylar & doing a stippling stitch. Then use it like a piece of fabric with an applique design. Pat

I keep reading about Mylar but haven't tried it yet. Lots of pros and cons, some say it's washable, some say it's not. I would want it to be washable for a design on something for my GD.

;D *2U