I have learned that if my idea isn't working out after I've given it a good try, it's OK to abandon it, move on and not beat myself up.
I have learned that I'm a "pusher" not a "puller"...I like to push the fabric through the machine like a regular sewing machine, not pull the machine around like a longarm.
I have learned that being cheap at the beginning of a project often costs me money towards the end when I run out of fabric/materials and have to make extra trips.
I have learned that if I stare at a project on my design wall long enough, (Could be a very long time!), the answer to a design problem will usually come to me.
That taking pictures of my blocks on the design wall and changing the pics to black and white makes a huge difference in how I see things and what I pick up on.
I have learned not to buy a pattern for a quilt that only has a graphic of the quilt and not a picture of an actual quilt done.
Watson