Trying my hand at colorwork

I've been trying out different designs of colorwork. I mostly stay with two colors and I design my own colorwork patterns. I figure I should learn how to design them to understand them better if I'm going to try out other written pattern. My post New Hats on the Horizon have some simple designs I created on my own, but this one is a more elaborate design I created this weekend:

As you can see here the beginning design is stretched out - I knitted too
tightly and the design loses its look

From this angle you can see that the top design came out better, once I
loosened my hold on the secondary yarn

I realized when I started the next section of the design (the red strip) that I did the first section too tight and the hat is really snug and the design is being stretched out.  I learned to let up on the secondary yarn and weave it along loosely so the design doesn't get stretched when you put it on.  I'm thinking of frogging this and doing it again. Not sure yet. But I'm really happy with my first attempt at my own design and the results.  Will be trying it again and again, until it I can do it without thinking!

What are some of your colorwork designs?  Have you designed  your own? Would love to hear from you other knitters out there with some tips and tricks on how to make this easier for a knitter who knits too tight?

Happy knitting!

Update: Just finished September 19, 2011:

Pittsburgh Steelers inspired earflap hat

I did a little better with this tri-color earflap hat.  Colorwork is getting a bit easier the more I do it.  I'm no expert but I figure practice makes perfect!