Basically, if you use a horn that is to large at the base or butt plug area on the spout, when you flatten it, it flattens so much, that it looks more wide than long, similar to a pyramid or sail on a sail boat. That's the reason a good designed flattened horn should be longer in length than wide at the base! Small diameter cow horns seem to look best and make nicer flat horns. ___ But that's, JMHO!
Your horns are proportioned good!
Rick