Tweaking!
I'm closing in on 100 batches under my belt and yet I have only brewed maybe 10 different recipes. As one of the above posters talked about, this is the amazing thing about small or split batches. I've fermented my DIPA at 61, 63, 65, with notty, with 05, with 04, with a hop tea, without...on and on. I even try to do double brew days if I want to experiment with my hop schedule, FWH or late hop. That way I can taste the result side by side. I've done my Pomona Ale about 30 times, my Botolph's Ale about 20. I always do a smash if I want to incorporate any new hop into a recipe.
I've learned so much and continue to tweak. I am trying my Pomona again next week during a double batch day...one with flaked barley for head retention and another with carapils to compare. Its cheap and easy the smaller the batch size is...the only way I know my recipe is perfect is when it tastes amazing and I stop asking...what if I did x.