I also put up fabric on my bathroom walls using the liquid starch technique. This was a guest bathroom and not heavily used. It is a little messy and working with 3 yds of wet fabric can be a bit cumbersome, at least until you figure out what you are doing. I believe I trimmed the selvages before hanging. Trimmed the top and bottom edges after hanging, because I had a pattern to match. I was VERY happy with it. Very easy to remove. No damage to fabric if you want to reuse it. No damage to walls (you do need to wipe down to remove starch). I trimmed the upper and lower edges with a jute-like braided fabric, which coordinated with my fabric. Didn't use a nail or a staple anywhere. Got many compliments on it! I say go for it!