You decide. It's all up to you. Whatever one you like the most is the one you should use.
I recommend a good epoxy paint with the Uv resistant seeler.
I recommend using acrylic or latex paint specifically designed for outdoor use on concrete statues to ensure durability and weather resistance.
Acrylic or latex paint is recommended for concrete statues as they adhere well to the surface and provide durability and weather resistance.
Any kind you want. The term to look for is 'Exterior' paint. It is available in oil and latex bases. I recommend using latex exterior paint. Service preparation is the most important part of the process. Clean and dirt free, with no loose bits or chips.
what kind of paint does O'Keeffe use
I recommend using acrylic paint for decorating pumpkins as it adheres well to the surface and provides vibrant colors.
The usual kind of oil paint.
Well, If it is called "Mirror Paint" I'm pretty sure that you can put it on there, if normal paint then i would recommend painting the frame instead of the mirror there is Glass Paint which i recommend you use instead.
Sterling Silver is a metal, therefore you can apply paint. Silver Jewerly is usually polished, and you must give the paint some tooth to grab hold of, (rough the area with fine sandpaper, 400 or 500 grit) also consider a metal primer, depending on the kind of paint you use. (I recommend a quality enamel paint)
Acrylic paint is the best kind of paint to use for decorating pumpkins.
Since I'm lacking the information of what kind of paint you used, and what kind of splatters they are, I can't really recommend a safe method for the job. While I usually recommend baking-soda scrubbing, I'm afraid it might indeed compromise the paint job. Given this information, you might want\need to either consult a professional, or scrub the stains and have the parts re-painted (easier if your door comes in panels)
The usual kind of oil paint.