Based on boiling 21.00 gallonsliters at 1.028 for 75 minutes, this will decrease your wort by 0.00 gallonsliters, bringing your after boil OG to 1.028. You wanted an OG of 1.063. It looks like it will be under.
Right malt profile, touch too sweet for my taste, but totally missed on the bitterness. Needs a significant methodology, if not amount, adjustment.