Summarize this article:

Do not try to look at every clover individually, as this will take far too long. Instead, stand above the patch and scan it closely. Pause if a clover jumps out at you and check to see if it has four leaves. If scanning from a distance isn't working, crouch near the clover patch. Run your hands over the clover patch slowly. Focus in on the clovers as they pass through your fingers, checking for clovers with extra leaves. If you see what appears to be a four-leaf clover, push away the clovers surrounding it. See if it actually has four leaves. Clovers sometimes look like they have four leaves, but you're really seeing leaves from another clover clustering near it. If you happen to find a four-leaf clover, keep looking in that area. Four-leaf clovers are caused by a genetic mutation. Therefore, they tend to be found close together as the seeds will spread around the same area. You may be lucky enough to find a second four-leaf clover.

Summary:
Scan the patch carefully. Skim the surface with your hands. Push the leaves apart if you think you see a four-leaf clover. Look in the same area if you find a four leaf clover.