If you use a compressed-fiber board you can produce your own texture when preparing the board for painting.
After the usual sandpapering to roughen the surface, give it a coat of white lead and allow it to dry.
Apply a second coat, but instead of brushing smoothly, pounce the paint with a stiff bristle brush.
An old brush cut flat like a stencil brush is excellent.
Unlike the ready-prepared mechanically textured boards that have a monotonously even surface, yours can have an interesting textured effect, as rough and uneven as you like.
The surface can always be sanded down if certain areas are too rough.
