This is the first test done just yesterday. The overall general shape is present, however much more needs to be finished. For example, the anvil is lacking in proper shape, the lower cloud bank needs to look more like convective cumulus, the anvil edges could use some feathery cirrus outflow and thinning as you get near the edges, the thunderhead convection itself looks to straight in some parts, and now what works. The overall shape is present as said, the scale is proper of a thunderhead based on the tallest ones known, about 21,000 meters at there tops, the width of the storm is correct for average storms even though it may not look like it here and there is billowy patterns but they could stand to be more tightened.