Stir the paint and poor into a paint kettle so that it is about a third full. Dip a 100mm - 125mm brush into the paint to cover about one-third of the bristle depth. Press the brush against the rim to get rid of the excess; don't scrape it on the edge - you'll take off too much paint and create a build-up on the inside of the kettle.
1. Start at the top of the wall and apply the paint with short, overlapping horizontal and vertical strokes. Work in panels about 1 sq meter at a time, allowing each area to merge into the next one while the edge is till wet.
2. Work systematically across the wall. Try and finish a complete wall before you take a break or there may be a visible change of tone where you stopped.