It's nice to save your best for last. You wouldn't want to put your best out there straightaway only to disappoint people with what follows.
But the present moment is the only thing that is real, so waiting to bring out your best is an injustice.
When you put your best out first and now, it gets better. Average suddenly becomes a lot less average.
(Plus, who cares about disappointing others and what they might think?)
Your best is for you. Go on, treat yourself. Go with your best, first, now, and always.