Digital collage, or sampling in drawing

I was not too happy with this drawing of Anna casting a glance of challenge I made months ago, the colours of the background were too soft and Felicia's tuxedo fur not black enough.
I am also curious on exploring the path of digital collage, and keen of learning more on my new Wacom Tablet. So I cut out Anna's portrait, and drew again the background complete with Felicia practicting Taijiquan with the tablet.