I'm thinking of using my laptop to burn a CD of my ex-girlfriend's nudes.
I hope you are just joking around. Are you really going to do this?
Yes, I will do this.
She may be an ex but she doesn't deserve such revenge. It's humiliating and is akin to the atrocities and blackmail in porn industries. You are going to ruin her life by not respecting what she gave you, and her family and job might shun her.
I got her to go to a photo shoot wearing a red dress.
If she consented on letting you keep those photos, you can keep them but if not, you should delete them or dispose those photos properly like shredding them so that no one else can take a hold of them. I suggest you contact her and apologize about you having those photos if she did not give permission for you to have them still.