So, imagine you are drawing a picture with your crayons. Sometimes, your hands can get dirty and leave marks on the paper that you don't want. The bresle method is like a fancy way of cleaning your hands so you don't make any marks on the paper.
In real life, the bresle method is used in something called "surface preparation" - this means getting a surface (like a wall or a car) ready for painting. Paint won't stick well if there is dirt or other stuff on the surface. So, we want to make sure the surface is really clean.
The bresle method helps us do this by using a special tool (kind of like a sponge) to collect any salt or other stuff on the surface before we paint it. This tool is called a "bresle patch." We put the patch on the surface we want to paint and rub it around a bit. Then, we put the patch in some water and measure how much salt or other stuff the patch collected.
If there isn't very much salt or other stuff, then we know the surface is clean enough to paint! But if there is a lot of salt or other stuff, then we need to clean the surface some more before we paint.
So, just like cleaning your hands before you draw a picture helps you make a nice drawing, using the bresle method helps us make sure a surface is really clean before we paint it.