Comment Guidelines
We welcome your feedback on Houseandhome.com. H&H reserves the right to remove any unsuitable personal remarks made about the bloggers, hosts, homeowners and/or guests we feature. Please keep your comments focused on decorating, design, cooking and other lifestyle topics. Adopt a tone you would be willing to use in person and do not make slanderous remarks or use denigrating language. If you see a comment that you believe violates any of the guidelines outlined above, please click “Alert a Moderator.” Thank you.
OK

Tape is the standard. It is easier if you have two people doing it so one is attaching at the ceiling while the other does the bottom.
Otherwise, depending on how thick/thin you want that stripe, what about using pens? Gold metallic pens are avalable in various widths in art stores or craft stores. If you want red or some other colour, call around to some art stores that deal with art students or graphic artists or architects and ask if they have Pantone pens and if they would work vertically over paint. I think they also come in felt tips so could be .25" or so, but you need to ask. Artists use them when they need one more colour on something which has been printed in B&W and the colour range is great (I think some company is actually going to start putting their paint out in pantone colours soon).
Anyway, if you had a good pen or three, you could just draw the lines on with a straight edge.
yea but thats alot of tape and work for thin lines/pin stripes, anything else i could use?
I usually see designers using painter's tape when they're doing striped wall painting......hope that helps