I find it extremely liberating doing crazy things with old pieces of paper, you'd be amazed what you can cover up! Get ready to roll up your sleeves and start tearing!
Anytime you use Gesso or Mod Podge you want to make sure you are being patient with it. The more patient you are with it the more glorious your masterpiece will become!
Have fun and start creating, it is SO liberating!!!
Hugs & <3's