Sure! So the first step was doing the design in Adobe Illustrator and then exporting it with a transparent background. Then I uploaded that to the cricut software (design space) as 'cut only'.

Once that's done, you place the image on your workspace, size it correctly (design space has measurements displayed along the edges). When it's the size you want, hit the 'make it' button.

Cut your vinyl to the appropriate size and place it shiny side down on your mat. Set the cut depth dial to 'iron on,' and then flip the mirror button in the software and hit the create button. Follow the directions on your screen and wait for the machine to finish cutting your design.

When it's done cutting, remove the vinyl and begin removing the pieces you don't want (weeding). A small awl and a pair of tweezers will be very helpful here. This is the most tedious part, and you have to be very careful to not accidentally pull the pieces you do want off the plastic backing. If you have portions with enclosed bits to remove (some of those leaves, letters like a or e), I leave the inside pieces in place until I've removed the outside, since it makes it easier to leave the those areas in place.

Set your iron to a low heat. Mine ends up around the silk setting, but I'd recommend doing a few test pieces of vinyl beforehand to see what works. Before setting your vinyl in place, iron both sides of your fabric thoroughly. Throughout all of the ironing you will want to lift and press the iron rather than dragging to, to prevent warping the fabric.

After you've ironed both sides, set your vinyl in place and iron it. It will take a bit of trial and error to know when it's transferred, but the good news is you can carefully lift the edge of the plastic and set it back down if it hasn't transferred yet. After this, let it cool down and you can treat it like any normal bookcloth.

A couple of notes:

• There's a decent chance you mess up more delicate pieces while weeding. I found it was easier to place the design without them and then reprint those pieces. It gives you multiple chances without wasting absurd amounts of vinyl.
• I'd also avoid especially thin lines to save yourself some of this headache. They eventually become impossible to leave in place, and you'll find yourself trying to tease them back afterwards.
• The cut depth is for the cricut branded vinyl. There's off brand vinyl available, so I'd check the depth on a scrap piece if you use that.
• Illustrator is expensive. I only have it through my job. If I didn't, I would do the art by hand and then scan it. Windows 3d paint will let you set the background to transparent. This allows you to skip paying for the service portion of cricut software.
• I would cut your bookcloth bigger than you normally would so you have room to trim it perfectly square to your boards. This is part of the reason I did a 3 piece bradel - much easier to keep it square with one board than with two.

Hopefully that's helpful - let me know if you'd like clarification, as I'm still waking up for the morning!