Use a fine edged ruler to fold against. This ensures clean accurate creases.

If you are unsure of yourself and want a practice piece first, merely trace the unit on plain paper before cutting pieces. Make a practice unit with the plain trace.

This is how the main theater piece should look after creasing all fold lines.

Glue back-to-back the decorative panel on the top of the theater.

Glue the four red tabs to the interior of the theater box.

Fold the four backing tabs forward. Glue the green grass tab to the inside floor of the theater. See next photo.

Apply glue to the back sides of the remaining tabs. Slide backing into place. Please note that the backing is cut to the exact size of the opening, but seems too large.  So adjust position carefully before pressing glued surfaces together.

Use a cotton swab to press the tabs securely.

Place a thin coat of glue to the back of the theater. Don't use too much glue, for over-saturation will cause the backing to warp. A little warping is expected until the theater is complete dry.

Carefully position the Punch and Judy panel to the back of the theater.

Place the theater down on a firm surface. Use a cotton swab and press down on the backing to make it nice and smooth.

Fold puppet base forward. Place a bit of glue to the under side of the base. Use a pair of tweezers to position puppets.