I have noticed that some knitters are very creative and change stitch patterns, use a different size yarn or revise the pattern slightly or even completely. Of course I have changed simple things like adding a pocket or making a picot stitch easier. I am referring to more advanced creative changes. For example I saw one knitter who knitter the cutest baby dress and when I checked out the pattern she had used a different pattern stitch. Or when someone changes the design of sweater.
How exactly does one go about making those adjustments?? Where can I learn more about that? I would love to be able to learn to be more creative when I am knitting!