If everything works out fine, you'll have now a really nice gift for your girlfriend. I hope you/she enjoys it!
Step 2: Cut out the basic shape
I used the plastic and wood milling bit of my Dremel to cut out the basic shape. However, you have to grip the Dremel really hard to keep it from going it's own way. Don't try to get too close to your painted lines or you will have to adapt your pattern. The fine tuning comes in the next step.