You really have to have some kind of system to be organized. You have to be able to find all pertinent scraps of paper, swatches, yarn bands, sketches, written notes that go with each design. You have to be able to find them easily and quickly to answer questions about your design when asked.
You have to be organized enough to always know where your submisssions are, how you sent them (email or snail mail) and whether or not they are available to submit elsewhere. NEVER, NEVER, NEVER, submit the same design to more than one buyer at a time. It is considered very rude and it will hurt your reputation if you do this.
You have to be as much of an OFFICE manager as you have to be a crochet designer. You'll have to find a system to record all purchases, record all income, and have it all ready for your tax person at the beginning of the next year.
I guess you can be an effective crochet designer without being organized, but I would have to think it would be much, much harder, and more stressful.
I'm less organized with my yarn, it's everywhere. :( I am what I am :)