Been playing with some different tile editors. I was using Construct 2 before to do most of the tile layout, but I'm opting for a solid background with transparent sprites to simulate the floor. Here are some of the results of the last week.
<img src="http://i.imgur.com/2cnnS.png" border="0" />
<img src="http://i.imgur.com/xJcw9h.png" border="0" />
<img src="http://i.imgur.com/hEmChh.png" border="0" />
<img src="http://i.imgur.com/oKZxch.png" border="0" />
<img src="http://i.imgur.com/7USDJh.png" border="0" />
<img src="http://i.imgur.com/39Rc2.jpg" border="0" />