Sorry, I don't have a picture. I have a complete room devoted to sewing, so I have plenty of room. I go for function, rather than looks. The paneling is a very smooth white on one side, like a dry-erase board. It is brown on the other (which has a smooth texture also), and is less than 1/8" wide. When cutting the 4x8, you might want to use masking tape on your cutting line.
This could be made any size, as long as it is supported by something, like a dresser or table, that is about the right height for cutting. It is very lightweight and according to the size you make, it could be taken off, and hidden between the dresser and the wall, or placed in a closet. Mine is so large, that it would be hard to do that.
Other alternatives could be a large blackboard or dry-erase board, placed over something of the correct height, as long as the framing around the board didn't get in your way while cutting.