I feel your pain, which is why I try very hard to avoid directional prints. I can't stand flowers growing "downward" or sideways , or houses turned on their side, or animals on their backs. HA. Drives.Me.Nuts.
But I like Teen's suggestion. I'd try that one first if it were up to me--but I'd experiment with paper first. (Draw triangles all over a few sheets of paper, then figure it out.