Mounted my b. herbacea. I’m even more in love with it now

Decided to take the plunge and mount my begonia herbacea. I absolutely love how it turned out, still natural looking but classy haha. Didn’t spend a dime either used a piece of wood that use to be in my terrarium but removed for more space. It’s already treated so it won’t get mold or rot from watering and it’s attached to a cheese board that I never use. I applied sealant to said cheese board to keep the mold away. Now just to get the watering right…. Does anyone have a mounted herbacea or lanceolata that could give me some tips cause I really don’t want to lose this plant trying to figure out how often it needs to be watered