Building a new outdoor pizza oven

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This is our new "almost complete" outdoor pizza oven.
It only took us a few days to build. We started out with
one design and decided that it wouldn't work as well as
we thought, so we switched to a different design. We
started with a concrete cinder block base to give it some height.
The we added a solid layer of red concrete brick down on to
the block. We then used a metal barrel, with a fire place door
installed into it, and a vent at the top of the barrel. The barrel
was then set down onto the brick and sides of brick built up
around the barrel. Once the side bricks reached the top of the
barrel, we then laid out brick over the top of the barrel with
half of a chimney liner on the very top to make it flat. The half
of a chimney liner is raised up a few inches to let the smoke vent
out of the barrel and up into the concrete brick half that is the
small chimney. After it was all together, we covered the bottom
areas with wire mesh and then stuccoed it all over
to give it a more uniform look. We added a layer of red clay brick
to the bottom inside of the barrel, then set in a wire rack onto that
to make an even smooth surface. Onto that wire rack, we added
a solid layer of fire brick to the bottom and up the sides of the
barrel to insure a nice even heat and so the fire can't damage the
barrel bottom. We will continue to add a few
more coats of stucco as it cures to have a nice thick layer in the
end. After it is cured completely, we plan to paint it with a paint
that can be heated.
Most everything we used was recycled, including the concrete
blocks, bricks, metal barrel and wire that we stuccoed over. We
had to purchase the mortar mix for the brick laying and stucco.