pitted finish
There are a few ways to achieve a pitted finish
Another technique you could try.
Apply a thick first layer of medium grain lime plaster,
finish with a mildly wet sponge float and allow to dry.
The float can be moved in circular motions or dragged straight for a different effect.
Once dry apply a second patchy layer of material, leaving areas of base coat showing through.
Use the wet sponge again to blend the areas in.
Dab the sponge float against the wet material to form indentations.
You can add a second patchy layer and repeat for a different look.
Using a wet sponge you can create a good area of rough finish keeping it all soft with the water.
A stippling brush or texturing brush works well too.
When the product has begun to dry compress the wall with an inox or pvc trowel to flatten down high spots and trowel lightly.
Its a similar technique to the old brushed leather look
Timing is important to keep the finish looking even, as lime is air drying this could be a while in the current climate