Cat, from what I've seen of your threads, I can't imagine you having a bad hair day. You have that classic beauty that you seem to pull off any length equally as well.
But since you say you do, I will offer this. I have poker straight hair and wear mine very short too, nothing longer than about 3/4 inch. For me the trick is to let the hair lay in the direction it wants, don't fight it. If you were looking down at the top of my head, my hair basically swirls clockwise like a small hurricane, and thats how I wear it. I don't wear a part or anything because it just ain' happenin.