Homemade Paper Clay

I've been using the commercial product, Celluclay, for my detail work, but yesterday I mixed up a batch of my own paper clay using, basically, Jonni Good's formula and so far the results are impressive! Actually, I had a batch of newspaper pulp all ready to go, so I used that ingredient instead of toilet paper. I imagine the difference will be that I won't get as fine a texture. Once dry, it can be sanded and shaped much more easily than the store-bought product. I'll eventually try her exact formula for a fair evaluation.