As the rather clever Daes said- are you doing this just for her? It has to be something you enjoy or it'll never work.
If you get your own enjoyment, I can only suggest one thing- believe in yourself. She obviously loves & trusts you- you're in an enviable position.
All else is merely detail- if you can believe in yourself, & get over the self doubts you're there.
Be sure & let us know how you go.
Tojo