I want to applique parallel straight lines, with a few right angles, onto a quilt top. I think this might fall under the title of Celtic applique, and I've been looking online for help, but all of the references I've found deal with curved lines. I'm looking for hints on how to keep my lines straight and parallel. My lines will be 1/4" wide and about 1" apart. I plan to cut the fabric with the grain. So far I have no problems constructing the bars, but I'd like to improve the accuracy in placing them on the quilt top. I can either pin them down or glue them or baste them with water soluble thread - any recommendations? I'd be grateful for any help you can give me. The picture shows part of what I'm trying to do.