I’m assuming by “tape” you mean the masking on the front, not the sticky tape on the back…if so, when engraving, most of us peel the masking off first. You lose a lot of your fine detail by leaving it on, and engravings just won’t look as good.
Oh, and you never will get great contrast with cherry veneer by just engraving it. Oak is best for strong contrast.
A good way to use your cherry is to leave the mask on, do a low detail engrave where you are either burning all the way through the mask or not at all and then treat with paint or the like before removing the mask.
What kind of paint would you suggest? I remember reading extensively about paint here and on youtube but there was just too much information…I’ve forgotten.