Lets use this pic as an example assuming everyone keeps their orders and no whales are manipulating, what would the general price trend be?
I don't think you can really make price trend conclusions off order book depth alone.
Since there are alot of buyers the price will go up soon? Lots of green = lots of demand?
The "demand" wouldn't matter that much if the price doesn't reach that buy/sell wall in the first place. (e.g. what would be the HUGE demand at $20,000 be if the price didn't end up going down that low anyway?)