Nice work.
Are you using instant coffee for the kolrosing?
If you are then you'll get better results if you use real coffee or cinnamon. For a change of colour you can also use paprika for red lines
I still need to get the hang of kolrosing as you can see the lettering is a little bit off. Also, the cuts are a bit wider and I've noticed the coffee powder I used actually liquidized due to humidity. It's not a problem as it's contained in the lines.
Are you using instant coffee for the kolrosing?
If you are then you'll get better results if you use real coffee or cinnamon. For a change of colour you can also use paprika for red lines