I took the photo on my dining table so you could see through to my dining table for the first outline.
I tried tracing a picture from off my iPad with tracing paper and I could barely see the outline of the lily flower. Then I remembered what I had used before that was the perfect solution!
The top photo shows a clear plastic sheet protector I use for my music sheets. I have used clear plastic sheets like the rigid old style overhead projector sheets that teachers of phonics and spelling used in elementary school (I did anyway). I taped the clear sheet to my computer screen and used a water color or white board pen. Then I taped my traced outline it to the window; I taped a sheet of copy paper over it and traced away. Works all the time, esp. when you need a good outline! ~Liz