A drywall patch can be commonly done with a patch kit; a "California" patch; or a patch with a support board. I test all three methods.
How to Patch and Repair Drywall
Drywall Works – K.U.S Electrical & Finishing Solutions
Projects - Page 2 of 5 - granworks
Fix-It Chick: Pick Out The Right Spackle For The Job News,, 56% OFF
Drywall Patching: Making Your Drywall Trowel Work Right
12X12 CALIFORNIA DRYWALL REPAIR PATCH
Patching Drywall: 10 Tips & Techniques For Repairs
Projects - Page 2 of 5 - granworks
How to Patch and Repair Drywall
Repairing Drywall: How to Get Professional-Looking Results - Bob Vila
Projects - Page 2 of 5 - granworks
Theater HVAC - Dead Vents vs Zones vs Mini Splits
2 Foolproof Ways to Patch Drywall
How to Patch and Repair Drywall
Patching Drywall: 10 Tips & Techniques For Repairs