How do i float drywall?

to float drywell means to spackle it. The floating is done either when filling in the seems and screw/nail holes in drywall sheets, or skim-coating with plaster. Floating (applying a smooth, even coat) take practice. Personally, I apply the spackle and get it a smooth as I can, then I sand the hec out of it until it is completely smooth, flat and well feathered (edges blended into surrounding unspackled sheetrock). A pro can float to the point where very little sanding is needed afterwards. I am not a pro - not by a long shot