You sure can, as long as both products are latex based or both are oil based, etc... The mixed result will also have a different sheen than both of the originals, so make sure that you have enough left over for touch ups later.
yes, you can.
If you mix a flat and semi-gloss 1:1 you should end up with a paint in the eggshell range. Mix the same paints 1:3 and you should end up with a satin. Experiment with small amounts to get the desired gloss.
Yes, significantly. Try mixing different amount of each until you create the sheen you were looking for
No because it looks like the same color sort of. Also it like a litte lighter but you barely can tell .There is technically no difference. That is your answer,Thank you
Yes, as long as you have the same base that's not a problem.
Yes or it can be the same as the wall paint if it should be flat.
If they are both of the same base you can. Satin paint can be an acrylic or a latex,or an oil. Check on the can cleaning instructions for base. Jason Pollock used both in his work 'Bluepoles' which hangs in the Canberra museum I think
Male satin bowerbirds collect objects that are the same color as a female's eyes: bright blue.
Yes, as long as the surface is free of dirt, wax and grease, and the eggshell and satin are both the same type, ie latex or oil, then you should have no trouble at all painting a satin sheen paint over an eggshell. Also, if the base is water based and the topcoat is oil, that will work fine too.
watercolor is a type of paint. oil, acrylic and water color are three different types of paint.
No. They have different textures and looks.
The same colour as the females eyes, bright blue.
More important is, that both paints are of the same kind (like: oil-based paint, acrylic paint, latex paint). Semi-gloss is more easily painted over then high gloss, but first better find out what the old paint layer is made of. Check with the help of alcohol - if paint comes off in any way when you rub it with a cloth of alcohol, it's latex or acrylic paint (and can be painted over with acrylics).