So we need:
1. Cutting board.
2. White acrylic paint or acrylic primer.
3. Acrylic varnish.
4. Adhesive for decoupage (can be replaced with conventional PVA).
5. Sandpaper (nulevka).
6. Paper napkin.
7. A brush.
8. Foam sponge.
First, the surface of our board must be primed. To do this, apply a white acrylic paint in 2 layers with an intermediate sponge to it.
From the pre-selected napkins, we cut out the desired composition and carefully remove the excess paper layer from it. Be careful if the napkin is two-layer, 1 layer will be superfluous, but if it is three-layer, then 2 layers.
We place our drawing on the surface of the board and carefully cover it with glue diluted with water in a proportion of 50/50. Do this very carefully from the middle to the edges. And without that, a thin cloth from glue will become even more vulnerable. Try to smooth wrinkles with light brush movements.
Let the glue dry for a while.
If your composition has only partially occupied the surface of the board, then empty spaces should also be decorated. Blot a piece of sponge in a suitable shade of acrylic paint and "scoop" empty areas. You should not use gouache for this, otherwise after coating the varnish it will be smeared, and your board will look untidy. After drying with a brush or sponge, apply acrylic varnish and allow to dry again. Do not worry, the varnish will be white at first, and when it dries, it gradually becomes transparent.
Take the sandpaper-nulevka and carefully walk it along the side cut of the cutting board. So you will erase small flaws in the form of paint or glue.
If desired, you can once again go varnish on the surface. The more such varnish layers - the longer your work will be. Well, if you decide to use the board for its intended purpose, then you need to put another layer of any varnish for furniture. Do not forget that acrylic is washed off with water.
And here's what you can get roughly:
By the way, the whole process took only 2 hours, and then just because of drying!