Technical Skills vs. Imagination...Which one do you choose?

Yesterday I was excited about my birthday, so I completely forgot to bring my knitting projects to knitting night. Brilliant, huh? So, Debra handed me a couple balls of yarn, a circular needle, and the directions..."Go! Knit something for the store." One of the balls was a tweedy brown wool...which I've never knitted with. The other was a totally sparkly green/blue/pink/gold ball of wonder. No clue what it is, but it sure is pretty. Anyway, I'm laughing at my imagination vs. technical skills. I immediately see a pretty handbag...with windowpanes in the tweed and kind of a spiderweb thing going on with the sparkly. And then a beautiful teal green satin lining. And I have absolutely no idea how to execute my vision. The biggest problem is that I have two balls of yarn with unknown yardage and I just don't know how far they will go. So, you know what? I'm going to wing it. I may as well draw up my design and maybe I'll be able to really complete it later on. It's my brother's birthday today! He was my birthday present when I was 8. Best gift ever! Happy Birthday, Dan!!!