How can I paint it?

[grizzled acorn]

I'm trying to paint tall grass and it's either the top half or the bottom half.
How should I do?
And one more thing,
I want to paint cliffs like a mesa.
How can I do efficiently?

[little oriole]

use the script brush with the grass preset or a painter tools with tool mask painting first the bottom and then the top

mesa like texturing you can do by copying the texture to clipboard and using the painter tool on clipboard mode

with masks to not paint air