Looks good!
The tenderness of the dough is mostly from the high temperature short bake AFAIK. From my experience, the hotter and faster the softer (within reason).
Also important is the fermentation. How much yeast (weigh it), the temperature, and duration. There's a great chart by TxCraig to give you guidance on "at X temperature, for Y hours to I need Z grams of [yeast type]. Do a quick search it's easy to find.
After that I guess your flour, kneading, general work flow play a significant role too.