unintended consequences

There's a fun and catchy drive in some quilting circles to be spontaneous and improvisational all the time.  Usually, I love it.  really, I am not someone who likes to be told what to do, so rules & patterns never appealed to me. 
But sometimes too much improv can have unintended results.
Case in point:  my doghouse block.

Cute, no?  I knew something was off as I pieced it, totally spontaneous and unplanned. 

I had trouble with the set-in puppy and getting the grass level, and I ripped out one seam, cut down excess fabric --never any waste, just new scraps :) 

I was going for a  house block with character, so I added in a cute dog,  but my proportions were off.  at one point I was about to trim the roof, but thought it would make it look dog-housey.  Ended up looking that way regardless. Oh well, back to the drawing board (maybe a plan would have helped in the first place..) Nothing lost but a little time, and in exchange I gained some experience and another block for my future Orphan Soup quilt...

Have you made any good mistakes lately?