The lace plastering technique is simple and easy, according to ReliableRemodeler.com. Lace plastering involves using a stiff brush to tap the plaster onto the wall, creating a textured surface. The plaster is then flattened and smoothed to create a surface ready to be painted.
Before the plaster is applied, the wall should be primed with a mixture of PVA glue and water. This allows the plaster to bond with the wall, and prevents the wall from drying the plaster out.
MasteringPlastering.com recommends adding plaster to a bucket of water rather than adding water to plaster powder, as it results in a better mixture. The mixed plaster should have a consistency similar to melted ice cream, and be free of lumps. Clean equipment as it is used in order to prevent any old plaster from mixing into the new batch. Once the plaster is applied, avoid over-polishing; this can stop the plaster from holding paint or wallpaper.
Other plastering techniques include the swirl and the skip trowel. The swirl involves carving a pattern into the plaster with a trowel, while the skip trowel technique involves adding sand to the plaster before it is applied. The sand creates a dimpled texture in the finished plaster. Roughcast plastering is used as an exterior finish, whereby pebbles and shells are mixed with cement and water. The mixture is applied to the wall, where it creates a very rough, yet uniform finish.