Congrats on the win! I think you did an amazing job. If competitions by you are anything like the ones around my area you can fix and reenter this cake into another competition.
Where I am if you cake does not win 1st place you have a year from the date of the first competition to reenter your cake. You can leave it as is or make any necessary changes you like. I say fix what you are unhappy with and try again even though 2nd place is awesome.
