Matt - Describes paints that give a flat, non-reflective finish. It is ideal for walls and ceilings that are not perfectly smooth.
First consider the size of the painting. The more impressive the subject, the higher the emotions it appeals to, the bigger it is. Religious, mythological paintings are often huge - their massive energy makes you shiver. It is pretty understandable with figurative paintings like Rafael's "The Sistine Madonna", and more subtle with color field paintings of Mark Rothko. People are often overwhelmed with religious tremor in the presence of his artwork, and the size factors in. Also, the subject often calls for larger canvases - battle scenes need space and cannot be fitted into a smaller painting, while some subjects will get lost unless depicted in a smaller size.
The leading brands now flag up paints with lower VOCs and produce paints that are virtually odour-free - the Breatheasy range by Crown is one example. Most leading brands now produce high-quality water-based acrylic paints which outperform the older technologies of vinyl and oils.
Take your time there is no rush. There is nothing wrong with having your project take a couple of weeks.
Now that you have primed the airless, make sure that there isn't a tip in the gun of the airless and bring it over to the empty bucket. Since there is typically cleaning solution in the hose leading to the gun it is a good idea to spray that out until you see thick paint coming out. Once you have thick paint coming out you may put your tip back in. Remember that the tip will have an arrow on one side of the handle that shows which direction it must be in, in order to spray.
In conclusion, this article has really just been a "Painting 101" exercise. I'll be adding more articles on the subject once you get more advanced. It's so rewarding to those who stick with it. My work now sells around the world online. So I'm glad I'm glad I stuck with it. It's been infinitely good to me, I've met the most interesting people....including Madonna! And I am so glad I get to do what I want And ultimately it's so gratifying to leave expressions of myself behind forever. And if the owners then turn around and sell my paintings for a fortune later, then that's the cherry on top for me. I feel lucky to have found my calling. And I hope you find it too. And I hope that every single time you view one of my paintings it brings you a little bit of the amazing joy it brought me when I was creating it.
If new caulk is applied, main body portion needs to be touched up, and most of the time new paint will not match aged paint even using exactly the same paint out of the same paint can, as sheen difference will come into play.