Hint: you can also use a brush (for instance R4 or M4) of which you yourself have cut the hairs diagonally.
Work from the centre to the outer areas and do not begin right where it starts. Then you push the hairs upwards and fill in the eyebrow a little from the bottom.
Use the brush to apply a thin layer of Eyebrow Fixer to the eyebrows. Use the brush to fix the hairs in the right direction. You can repeat the process several times, each time only using a little of the product.