A good macaron should have a ruffled "foot" at the base of the shell. If the feet extend too far out, it might be overmixed.
If you're trying a new spot, keep these quality markers in mind: where to buy macarons in nyc
Gifting (their boxes are legendary) or a posh afternoon tea. Top Picks: Pistachio, Rose Petal, and Salted Caramel. A good macaron should have a ruffled "foot"