abstract mixed media

I don't know if this piece is mixed media or collage, since I've painted over layers of book pages, but whatever it is, I think it's done (for now).  It's inspired by Jane Davies, author of Collage Journeys, and her video about working large. My "large" is a 16x20 canvas, my color palette, white, black and a craft acrylic paint celery green or similar, and then a bit of veridian green for the teal highlights.

I started with some random marks and drips made with india ink.  Then I added lots of torn book pages around the lines (forgot to take a picture of that stage).

I smooshed around the black and white making all those delicious grays.  The bits of gold/orange are the book pages peeking through and the warmer spots of gray are with the celery green added.

I softened the darkest blacks in the upper right, covered more of the canvas and adjusted the lower right corner tones.  I'm pleasantly surprised at how much I'm liking it.

I added some bubble wrap dots (large bubble wrap) and the teal.  As I lived with it a day on the wall, I noticed that the design is clearly separated into quadrants and there's a "focal point" in each one.  Not liking that - the eye doesn't know where to look.  A revision is in order.

I redid the upper left corner, making it quieter, added another horizontal line at the bottom to strengthen the composition and keep the weight at the bottom.  Now it's on the wall for a bit to make sure it's done.  Here are a couple of detail shots:

I feel like I had a productive, successful weekend!  I'm open to any and all comments/suggestions for improvement/observations, etc.  What do you think of the composition?  the tonal variety?  the textures?  how can I improve my efforts next time?  

By the way, be sure to visit Jane's site - she is truly an inspiration and offers lots of online classes.