Much of the process for making a bowl from your hump mould is the same as it was for actually making the mould itself (see here), with just a few additions
Begin by rolling a slab of clay large enough to fit over the mould as you did when making it.
Place the slab over the mould then, if you have one, roll over the surface carefully with a printing roller to make sure the texture is taken up on what will be the inside of the bowl.
Alternatively, if you don’t have a print roller, smooth over the surface several times with a rubber kidney.
Cut away the surplus clay at the rim as you did when making the mould.
Centre the mould on a whirler (or wheel), then lightly score a line where you would like the foot ring to be.
Roll a coil of clay to about 1cm thickness. Position the coil on the bowl at the scored position to measure the correct length.
Cut both ends of the coil on a diagonal where they meet – this makes a better join than butted ends. Remove the coil – score and slip the ends then join them together and smooth over the join.
Score and slip the upper surface of the footring and the marked position on the bowl, then fit the ring in place making sure it is perfectly round.
Place a wooden batt over the footring and check the level is correct with a spirit level. Correct the level by applying pressure to the batt.
Blend the outer edge of the ring onto the bowl body using a wooden modelling tool then smooth over the join with a kidney to remove excess clay and neaten the shape.
Blend the clay inside the footring with a finger (this is easier than using a tool for awkward areas), then carefully remove any lumps and bumps with a kidney until the ring is neat and of an even thickness all the way around.
Turn the mould and bowl over onto a batt, then carefully – but as quickly as possible – lift the mould out.
Surform the rim to even and neaten it up, then soften the edge by wiping it around with a barely damp sponge. Don’t over work the sponge because it will spoil the rim rather than improve it if used too much.
Allow the bowl to dry slowly before bisque and glaze firing.