As the concrete is unloaded, start with the concrete that was placed first and finish with the concrete that was placed last. (When working on a slope, work upwards on the slope.) Spread the concrete with a square ended shovel, a concrete rake or a come-along. Avoid using a garden rake or other tools that will segregate the concrete. Lightly tap the edges of the forms with a shovel or 2×4 to release air bubbles and consolidate the concrete.