Don’t pile them on top of each other. The key to proper curing is providing good air circulation between the bulbs.
Don’t spread them out in the sun. Garlic is susceptible to sunburn and can literally cook under the sun, which deteriorates flavor. So you want to minimize the amount of direct sunlight it gets during the curing process.
Don’t wash your garlic. After all, the point is to dry them out!
Don’t remove the leaves while the garlic is curing. The bulb continues to draw energy from the leaves and roots until all that moisture evaporates.
Keeping the leaves intact also helps to prevent fungi or other lurking garden contaminants from spoiling the garlic before it’s fully cured.