ZBrushCentral

Demon Horns......some help pls

hello

new here. can u please help me with some tut.

i just model some D.hornes , for a project of mine , i a need some guidance …I want to fill the cavitys with glowing magma , bud i don`t know how.
i can polypaint … the magma in 2-3 shades but some guidance will be much appreciated. if you can help me with some links it will be great . thx

demon horns test.jpg

some like this?

CREATURE TAIL
1.TOOL:Select Ring3D
2.INITIALIZE:Set radius=50,Coverage=220,Scale=0
3.SELECTION:Apply Mask All,Set Sel=2,Apply Col
4.DEFORMATION:Apply Inflat 100,RotZ-20,Inflat 50
5.SELECTION: Apply Mask All,Apply Row
6.DEFORMATION:Apply Inflat 25,Smooth 100
7.SELECTION:Apply Clear
(old tut from Pixolator in ZBrush Academy Training)