Awesome! Thank you! :D
By the way, I went through and combined all of your 16x16 wall sprites into a single condensed sprite sheet. I even threw in the walls from the basic set and a "cleaned up" version of each of them that matches the paid pack a little better. I'd like to send it to you so you can include it in this pack; that way it's available to use for people who would prefer to have a single sheet rather than separate files for each wall. :)