First carve out all the parts of the nightstand with your X Carve.
Sand all the edges.
Glue all the parts together as shown on the picture. Clamp everything together and let it dry.
On the top and the side pieces, mark out the holes as shown in the pictures. Drill 6mm holes and glue in the wood dowels, so that they still stand out a bit. Saw them down with a japanese handsaw and sand them flush.
You can apply all sorts of finishes, such as wax or oils.