Look for a similar type of work and how much are people charging so you can establish a base price. In the beginning, go lower in price so you can sell, and then you can increase your prices as you sell more and more works.
That all depends on the room. I suggest you itemize everything, including the square footage of all of the walls and ceilings, and the linear footage of all of the...
The biggest mistake is not using high quality primer. You want a stain blocking primer, something that's going to resist any stains coming through on the finish coat.
I would say uniform coverage is probably the most important part. Try to work in sections, such as back left, back right, middle left, and middle right. Don't just jump...
Varnishing your painting is a good idea. The varnish will help protect your painting from dust, yellowing, and sun damage. It also adds a nice sheen that can help the...
Two coats of varnish are usually enough for an acrylic painting. Be sure to apply the varnish in thin coats, and wait for each coat to dry before applying another.