Filet decoration is one of the most commonly used techniques, and gingerbread (perníčky) with it are very often labeled as "embroidered."
I think that's not entirely accurate because although the motifs for these patterns can be cross-stitch embroidery, they are created by alternating filled and empty squares in a regular square grid, which is the principle of crocheted filet lace. That's why I use this name.
Filet decoration is one of the most commonly used techniques, and gingerbread (perníčky) with it are very often labeled as "embroidered."
The basis is a square grid formed by lines placed perpendicular to each other. The final fineness and regularity of the pattern depend on its fineness (i.e., on the size of the resulting squares) and also regularity.
When decorating, we therefore focus not only on making the lines straight, smooth, and uninterrupted but also on their regular spacing in the first layer. The more carefully we work, the easier it will be to place the second layer of lines.
After drying, we can start the actual patterning, i.e., filling the appropriate squares with dots.
Inspiration
Watch the tutorial video
Tip for you
Filet lace is very often used in the form of band lace or lace inserts of various shapes. To achieve the best result, I recommend in these cases filling the pattern from the center to both sides. This will achieve its symmetry.