Paint should not be applied to a concrete basement floor until the concrete has aged for at least a year. The floor should be dry when painted, the best time for application being during the winter or early spring (assuming there is some heating apparatus in the basement), when the humidity in the basement is low. In general, three coats of paint are required on an unpainted floor, and the first coat should be thin to secure good penetration. After the paint is dry, it should be protected with a coat of floor wax. Materials and their application, every paint manufacturers paint will vary. If you are freshening up old walls and painting back to the existing color, the product doesn't have to be high end or have good coverage. If you need to paint a dark color over light color or light color over dark, you may want to consider purchasing a top quality paint to avoid multiple coats. I suggest Valspar, Pittsburgh or Benjamin Moore top of the line wall paint. These brands work well for straight out of the bucket use and are application friendly. Sherwin Williams is not my first choice because the coverage is poor and you will have to apply multiple coats but, it does apply, fluently. If you find a product does not apply well, maybe it is to heavy and/or sagging on the wall, you may need to thin the paint with a little water, this will reduce the coverage but make the paint flow better and lay down nicer on the surface. I do recommend latex paints for all applications, these days a good high end latex is as good as oil paint and your tools clean up much easier, it will also be less harsh on the respiratory system. The only situation I recommend oil paint, is as a primer/stain blocker over stains that "bleed" through the paint. You can get a stain blocking oil primer in a convenient spray can and spot prime any trouble areas before painting and in the case you need to prime all of the wall due to smoke or water damage, I recommend getting it in gallons and rolling it on where the stains are present. Don't forget proper ventilation and/or a respirator when using the oil based primers! Color can make a big difference in your life. I know from experience. Before I learned my right colors, I had a closet full of right and wrong colors. Of course, the colors did not work together and definitely did not coordinate. I had no idea of the difference that coordinated colors can make. Further, I had a drawer full of lipsticks some with gold undertones and some with blue undertones.
The perspective. Do you feel the distance between you and the painting? Are you an observer or a participant? The way you feel is dictated by the artistic choice - it's never a coincidence. An artist thoroughly selected the angle: you may look upwards, or downwards, or be at the same level with the objects depicted. If the horizon is at your eye level, the impression you will get is calm, stable. The high horizon will reveal more space, in landscapes it provides a majestic view. Paintings with the low horizon, so common with Dali, are monumental, highlighting the size of the objects and figures. The unusual views of Paris by Pissarro appeared as he painted from the hotel rooms. A flat, semi-gloss, or high-gloss finish may be applied to the primed surface. For a flat finish, two coats of flat wall paint should follow the priming coat. For a semi-gloss finish, one coat of flat wall paint and one coat of semi-gloss paint should be applied to the primed surface. For a high-gloss finish, one coat of semi-gloss paint and one coat of high-gloss enamel should be used over the priming coat. On the other hand, in some cases there are legitimate reasons for one area to be bad even if the rest of the paint is solid. If poor body work or rust repair was done in the past then maybe just that section of paint will need to be removed. So what exactly makes a rose appear "red" or grass appear "green". In the green grass, you are only seeing green because the grass has pigments in it that absorb all colors of the solar spectrum except green. So green is the color that is reflected back to your eyes. The same holds true for the red rose, only the rose absorbs all colors of the spectrum besides red.