Engraving line texture

Hi! How do I get rid of these line textures? I want a frosted/translucent look.

Omtech k40+, 300LPI, 20% power, 200mm/s(i forgot speed but this is a good guess) focus is 16mm from material. I did the line test and got that distance.

How do I fix the line texture? I want a frosted/translucent look.

Hi! How do I get rid of these line textures? I want a frosted/translucent look.

Omtech k40+, 300LPI, 20% power, 200mm/s(i forgot speed but this is a good guess) focus is 16mm from material. I did the line test and got that distance.

How do I fix the line texture? I want a frosted/translucent look.