Store your leftover paint in plastic Rubbermaid beverage jugs or other plastic seal-able containers. Paint left in the can always gets funny after time. Either the can isn't properly sealed of it gets exposed to extreme heat or cold. I like to store my paint inside where the temperature is controlled.
Is the light neutral, sharp, mystical?
Don't ask friends to help you paint. Basically, you are asking them to give up their day off to save you money. You don't want to be first on the list when your painting buddy hits you up to help him move do you?
To design a look with analogous colors, you can have any three colors next to each other on the color wheel. Successfully combining these colors in a room is one of the easiest, next to using monochromatic colors. In general you will want your design to use similar tones throughout the room except in the case of accent colors, which may be bolder.
Always use a sanding block for flat surfaces. Just your hand behind a thin piece of sand paper can leave grooves and low spots. It's also easier on your hands. For inside curves try wrapping the sand paper around a short section of garden or heater hose. This will help approximate the concave curve and help stay away from sanding through hard edges. On hard edges, like the top ridge of a fender or leading edge of a hood, you need to do this by hand. A sanding block will quickly dig right through the paint on a hard edge and take you down to bare metal. This means primer and more sanding.
THE BACKROUND. Collect information on the artist and the historical background. To analyze "Guernica" by Picasso, you need to know that Guernica is a town demolished by the Nazi, and you have to read up on the essential features of cubism. To interpret the image of kissing people covered by a piece of cloth in Magritt's "The Lovers", whatever you guess by looking at the painting falls flat once you know that the artist's mother got drowned in the river, and when found, a piece of cloth was wrapped around her head. So, don't rely on your skills and taste too much, there are things you need to KNOW before you start making assumptions. The historical background of the paintings itself is important. Was the artist an innovator, did he start a new trend or movement, whose steps did he/she follow? What experiments was he involved with? How was the painting perceived by the contemporaries? Claude Monet started impressionism with the painting "Sunrise. Impressions". Malevych started suprematism as a development on abstractionism, laying out the new artistic theory of the color, the form and the composition of the painting. The rough lines and raw colors in the fauvist paintings may be traced back to Van Gogh. Do you think there is something new suggested in the painting you are looking at, or is there anything at all distinguishing about it?
Cutting Down on Paint Chemicals. Everyone knows the nasty smell of paint drying - worse with oil-based paints, but also noticeable with vinyl emulsions. This is caused by paint solvents containing VOCs. They are proven health risks, and can cause allergies, headaches and breathing problems and irritate eyes, nose and throat. They are also an environmental hazard.