First, ensure that the wall is clean and never affected by any moisture harm or structural problems, akin to cracks. I’m responding to Alfstan’s comment: Don’t let all this hype about archival quality bother you I’d be keen to guess that you simply or anyone you already know will not be round to care if or when the issue of longetivity rears it head.
Relying on the colors in your image, you can use interior household paint for giant areas of colour (blue skies, green fields, and many others), or you may combine your artist-high quality acrylic paints with a Liquitex Ultra Matte Gel or Matte Gel Medium by using a 1:1 ratio.
The quality and type of paints any of us use is, I think, a matter of private preference relying on what your intention for the final work is. I started portray with 😮 greenback store craft paints and have step by step upgraded, regularly attempting different manufacturers to see what is going to produce the most effective results for what I’m attempting to attain.
What I’m going to attempt to do is to take a few of my cheap latex seascape work , which I can end up pretty rapidly, right down to the coast to sell whereas I paint by my van and see if I can not less than get gasoline money for them. They will go over texturing wall details and be sure that extra complicated techniques are correctly accomplished.