If you haven't seen the fun products at YMBD Scrapbooking Supplies on Etsy you have no idea the fun you are missing. I purchased this pack of chip board craft letters and decided to use them to make a few UnStrungSisters signs for some upcoming craft shows.
The base is the thin balsa wood strips that you can pick up at the craft store. I purchased mine for around $1, which I cut into 2 -18" long strips (I'm talking about the wood here~ US dollars aren't that big anyway!). Then, with the help of my littlest helper Sadie, we painted it randomly with some different light colors.
After the paint dried, we added a not-too-thin coat of crackle glaze.
Once that dried, we added a coat of black paint, again - not too thin for better crackle.
When it dried, it looked like this.
For the last step in base preparation, I lightly sanded here and there. Next, the letters were glued in place and once dry, finished with a satin finish varnish and..... ta-da!