Some proposals simply say to paint the walls and ceiling and never specify the number of coats to be applied. If the colors are similar enough, it's possible to get away with one coat of paint and not discount your pricing. No matter how hard you try, tiny, pin-sized air holes will pop exposing the original walls. This may not bother you if you can't notice it, but principally speaking you should have paid your painter less for the work.
Second coats on similar colors are almost never recogicnized as being needed until the coat is applied and has dried. ONLY THEN WILL YOU SEE WHETHER IT NEEDS A SECOND COAT or not. Yes, painters can use a cheaper paint then what you paid for. That is solved by getting your own which, I would charge extra for because I will always have to go get more, or add second coat because home owner tried to skimp on paint, or they got the wrong color etc...
Want to know the color you pick will be good in your room? With this tool you can put it on some "walls" before you even paint. Here you can do it with Glidden's room visualizer tool linked below.  Either pick from our selections of rooms or upload your own and you can change walls and trim to find your perfect color. {^widget|(name)CtaButton|(Label)Paint+Your+Room+Online|(Url)|(ButtonID)Paint+Your+Room+Online|(Target)_blank|(Color)d6414d|(Edge)btn-rect|(GtmT)cta|(widget_displayname)CTA+Button^}
If a company has a formal training program, it’s a safe bet that they have their act together. They can do training in-house through regular meetings of their employees.  They can have field training systems in place, usually coordinated with classroom training sessions.  They can also use trade associations, such as PDCA (Painting and Decorating Contractors of America) or paint manufacturer’s representatives to stay up to date with the latest materials and techniques. 
The question, “how is your warranty program funded?” will probably get you some puzzled responses.  The fact is, most contractors have never even considered how to pay the expenses associated with warranty callbacks, and some contractors just seem to vanish when they get a warranty call.  A professional contractor will be preparing for callbacks (they will happen, even to the best contractors) by including a line item in their budget for warranty work.  Ask the question and see what kind of response you get.  Sometimes, how the question is answered is more important than the answer itself!
Primers aren't just diluted paint. They're formulated to establish a solid, even base, seal stains and ensure that the topcoats of paint go on smoothly and bond securely to the surface. "Most homeowners use latex primers, but the pros stick to alcohol and alkyd primers because they'll cover almost anything," says John Weeks, of John the Painter in Mobile, Alabama. Primer can affect the appearance of the topcoat. "It's okay to spot-prime the ceilings but not the walls, because primed spots will show," adds Span.
Brown denotes a personality that is earthy, realistic and trustworthy. This classic earth tone can be applied to living and work areas alike, as it evokes a feeling of being well-rounded and connected with nature. Terracotta and dark mustard brown combinations are perfect for Latin American and Santa Fe-style décor. Brown hues are great for interior spaces that get a lot of sunlight. Lighter shades of brown, such as beige and taupe, are neutral colors that particularly work well in homes that are being shown to potential buyers.

For the best work, hire a painter who is licensed. And make sure he/she is bonded and insured, with up-to-date, adequate workmen's compensation and liability insurance. There are (at least) two good arguments against hiring unlicensed house painters: 1) even if you sign a contract with them, it may be legally unenforceable, and 2) your homeowner's insurance might not cover against accidents or theft.

Sand the trim with a fine-grit sanding sponge. Sponges get into crevices where sandpaper can’t go and let you apply even pressure. Then apply the first coat of paint, let it dry at least 24 hours, lightly sand it again for a completely smooth surface, and apply the second coat. After each sanding, vacuum the trim, then wipe it down with a tack cloth to remove the dust.
So sad that Angie's List requires the contractor be notified!! They have lost me as a client. If I'm dissatisfied and want to give an "F" rating (question/workers...I SHOULD NOT be intimidated into passing up an opportunity to explain my experience! There is NO WAY my contractor got an Aplus rating from over five hundred someone was lying....yet I can't report that without the contractor knowing it? REALLY?
Even if you go it alone, specialize to keep your initial investment low. If you do only interior painting, for example, you might get by with one ladder, a few brushes, rollers, basic hand tools and such, for an investment of less than $300. Again, you can add to your tools as you need to (every job is a bit different), and parlay profits into the equipment necessary for exterior painting or working on large commercial properties.

Paint Contractor Co