Step 3: Burn your fingers (glueing)
Next wrap the fabric around the wire, after making sure it's bunched up evenly everywhere. You're probably gonna need to do this a couple times before you have the right shape. If you've found that shape, hold your flower a little above the edge at the stem, and then spread some glue in between the layers of fabric. This is the part where you're probably gonna burn your fingers pushing the layers of fabric gently together. I've not really found an ideal method or tool to prevent this... If the glue is dry, you can trim the extra threads from either the fabric, the thread or the glue.
The ribbon I used was coming apart at the end a bit, like you can see in the picture. Because I was giving the roses just as a nice gesture and I didn't expect people to keep these forever, I was fine with this. I just made sure the ends were ok at the moment I gave the rose.