Do tell where you found the letters??? Love this look... I know had been thinking of this one for a while. I, honestly, like your letters better than the "catalog" letters.
There's an S and an A at goodwill right now... That's how I started -random letters at random stores :) I may have a few extras as well.
love it! great job... i'm gonna be on the look out for letters... i love how yours are all different looking. fabulous!