Following instructions leads to pre-determined results.
Creating is not just a horse of a different color.
It is a whole new species that can come out of thin air at times. Creating can be a surprise!
I had no intentions of making a lego bot/person with a couple picket signs when I was playing with my 7 year old son yesterday, it just happened.
Because I allowed creativity to flow with no particular intention or goal.
Sure following instructions can be useful to learn,
but not nearly as much of a craft as to learn to make your own.