When working with Water Make-up preferably use separate brushes for light and dark colours.

To draw a thin line, you do not necessarily need to use a narrow brush. You can also use the edge of a flat brush for that.

Draw a line down from the middle of the nose (between the nostrils) to the upper lip. This line gets wider as you get towards the upper lip and you then draw it along the upper lip to the corners of the mouth. Continue the line beyond the corners of the mouth and upwards in a curved shape.

WATER MAKE-UP (PURE) = Water Make-up Pure
If you do not want the colours to mix, be sure to wait for the first layer to dry before applying another colour over it or up against it.

You can also use Grimas Stipple applicator for this.

Hint: Regularly change the water you rinse your brushes in and preferably work with two water bowls: one for light and one for dark shades.

Hint: to make beautiful, thin lines, you mix the Water Make-up with Cleansing Lotion instead of water.
Grimas Water Make-Up (Pure) can be used around the eyes, but children often do not like it when brushes are so close to the eyes. So decide yourself how far you want to extend the colour.
When working under the eyes, have your model look upwards - only with the eyes, without moving the head.
If you work above the eyes (eyelid), have your model close his/her eyes in a relaxed manner.
Children are inclined to shut their eyes tight. Then you can say: keep your eyes closed as if you are sleeping.

To make the eyes appear slanted, you proceed as follows: Draw with a fine brush to draw a black line along the upper edge of the eyelashes. Then extend that line diagonally upwards from the outer corner of the eye. Then extend it the other way, from the inner corner of the eye downwards.