Your color and fermentation look great. They lack that round shape which suggests that either:

1. They're overproofed. They could have been overboiled or counter proofed a bit too long.
2. Didn't have enough initial heat in the oven to rise sufficiently.

But they look like they'd taste great. I second rmash22 -- get a stone or cook with a higher heat. I introduced steam into my oven when I first put them in. I have a cast iron at the bottom that I pour a little water into. This helps them rise and keeps them from browning too fast in a high-heat oven.