It's absolutely gorgeous.
Just a side note, though, you don't need to have a white pen, paint, or white out. you can also get masking fluid to mask off bits of the paper you don't want paint on. If you want to, of course. What you did absolutely works, It still looks amazing. But it is an option to be aware of. If you do decide to get it, use a small, old or otherwise "not good" brush and clean it off as soon as possible once you have the masking fluid on the paper. It destroys brushes very quickly, but definitely does it's job on the paper.