Trace your image using tracing paper.
I am starting this project with the January issue of Vogue (US edition).
(You can also use your original drawing or a photograph)

Place the tracing on your fabric. Then use a bone folder or a spoon to burnish the pencil marks onto the back of your fabric.

When you are done, it will look something like this.

Then iron an iron-on interfacing or
stabilizer over the design.
This will prevent the pencil markings from rubbing off as
you work and it will also make the
fabric a little heavier and stronger.

Now start to embroider it.

What distinguishes a Glossy from other types of embroidery is the use of The Glossy Back Stitch.
Unlike traditional embroidery, this stitch is worked on
the back-side of the fabric.
The Glossy Back Stitch is similar to the traditional back stitch.
The difference is that you can change the length of each
stitch as you embroider your image.
Doing so results in a jagged and impressionistic design on the right-side of the fabric.
That's exactly the goal of this technique.

Continue to embroider your image.

When the entire piece is embroidered, it will look something like this.

All the knots and loose threads will be visible on the side you've stitched on. Turn it to the right-side and it looks like this.

At this point, you can leave it as is, or if you want to lightly gesso your Glossy. Now you are ready to paint, applique, sew, bead, cut in to, quilt, collage, watercolor, gold leaf or embellish it any way you want.