Step 10/15:

Slip, which is clay and water mixed, is applied to both meeting surfaces. The slip consistancy should be like mayonaisse.

Step 11/15:

Here I've put the back on top of the front which is face down wedged between two sandbags.

Step 12/15:

Work the seam inside as far as you can and outside using a wood sculpting tool that I forgot to mention at the beginning. Add fresh clay as needed.