I wouldn't call it a phase with my DD. It just depends on her mood. Sometimes she is all about drawing people, animals, flowers, etc and other times she is into drawing abstract pieces. The other day she wanted to paint so I gave her some watercolors and expected to get a muddy mess. She filled the page with vibrant colors that blended well and no mud. I was impressed.
I have noticed that her drawing is effected if I'm drawing. She loves to watch me draw and attempt to do the same techniques.
Kind of on a different topic but DD has been writing forever and in the past few months she has started to write her name backwards: the mirror image. I found out this weekend from one of the moms at DD's school that her daughter has always wrote her name backwards and chances are DD is copying her and is now in the habit of it. Both girls are left handed so I can see why it would be easy to start on the wrong side of the page.