There are a few factors that you need to consider before painting buildings. As you are aware, painting requires skill in order to achieve reliable results. The first thing that you need to check is the type of color being used. It is very important to work with quality water colors in order to get quality results. The other factor is the type of angle that you want to use while painting. It is important to select the right angles within the building in order to paint it appropriately. Once you have the right angle, you can start painting the building. By using a camera, you will be able to get the right grids for painting your building. If you plan to choose a contractor, it would be good if you settled for an agreed cost. Some contractors tend to charge high costs and this can interfere with your budget.