Trees that lose their leaves in the fall (i.e., deciduous) are the most effective at reducing heating and cooling energy costs. When selectively placed around a house, they provide excellent protection from the summer sun but permit winter sunlight to reach and warm your house. The height, growth rate, branch spread, and shape are all factors to consider in choosing a tree.
Feathering is a term which means using a brush to paint around borders and corners. When used well this technique will produce a smooth transition between the brushed parts and the larger rolled surfaces. Some painters suggest that when you feather a ceiling, for instance, you should only cut in the border a few feet ahead of where you will roll. In other words, the best way to paint a ceiling is to have one person cut (feather) in and have a second person with a paint roller come up behind. This will insure that the paint dries smoothly.