Here's the product of about an hour messing about this morning
The model isn't at all an attempt to design a Quake-style fire flower, it's just what a fire flower usually looks like. The skin is pretty basic, flat colours and a touch of shading, which I pretty much painted entirely in the 3d view of QME. You can argue it's stylised, or just lazy. In any case, I wouldn't be hurt at all if you decided to rework it.