The plaster should have a similar consistency to thick pancake batter.
Make plaster of paris look like marble.
To obtain a natural look for the veins get a dry sponge and gently tap the veins making the color blend with the ones underneath.
In a mixing bowl combine the water with 2 cups 470 ml of white school glue.
Acrylic polymer is white liquid it looks like milk it is mixed with water if you want at a rate of one to one.
And if you can get acrylic liquid polymer you can use clear shoe polish and you can polish the things you make and they will look amazing.
Apply a light base color to the wall.
Or you can use it neat.
Use this plaster within 15 minutes and let it set 3 days to completely dry.
The resulting plaster will have a soupy consistency.
Polished three dimensional faux venetian plaster enhances both the light and dark tones of the same color creating a sophisticated marble like effect.
Keep in mind you ll want to fill your container up enough to be able to dip the vase inside without the plaster overflowing.
Use a sample of marble or a picture as reference.
Use a small paintbrush to add veins which should be thin and random.
To create a marble like venetian plaster effect in your space you can use inexpensive paint and faux treatment tools for a fraction of the price of paying a professional plasterer.
To make plaster of paris with glue instead of flour heat 1 cup 240 ml of water to 100 f 38 c.
Following the instructions on the plaster of paris container mix your plaster.