Yes, that would work as a painting technique.
Yes, you can paint flat paint over satin paint as long as the surface is properly prepared and primed.
If you paint over the "weathered" paint, it will chip and cause the stain to come off. Also, the stain needs a clean sanded surface in order for the wood to absorb it. Otherwise, there is no reason to use stain.
Yes, you can paint matte over satin finishes. It is important to properly prepare the surface by cleaning and sanding it before applying the matte paint to ensure good adhesion.
can you stain over kool deck pool paint
Clear primer.
Yes you can.
Assuming you are using a dye-based spray on stain, yes, if the gloss is already set up and scuffed! However,while spraying or applying, gloss is too wet/tacky to work with between coats! As I do at work using Acrylic Polyurethane paints onto cabinet parts, your best bet is to apply a first coat of satin, stain over that, then a final coat of satin to seal the stain! (NEVER apply gloss over an unsealed dye based stain, as the heavy material will have a tendency to pull your stain and make the color look uneven!) As soon as the satin is flashed off (10-30min, depending on paint and temp.) you can apply your gloss. This is the method we have used for decades on HIGH quality cabinets!
Arson.
Yes, you can stain over acrylic paint to achieve a different finish. However, the acrylic paint must be fully dry before applying the stain. It is recommended to test the stain on a small, inconspicuous area first to ensure the desired result.
You can try paint remover or paint the desk color over it.
you could paint yellow and then paint over it in a light silvery glaze once the yellow is dried
Yes, after allowing a sufficient time for the base to dry.