Lava

This was a practice into creating a lava or magma like texture. This was done through a combination of both paint and a photo reference.

 I started of with simple bright yellow lines to form the basis of the colour.

 After i applied a lava photo over in order to get the texture or the while adjusting the opacity in order to merge it with the lava lines.

Finally i went over the lines with a luminosity layer to create the glowing heat effect. As a personal criticism, i feel it would have been better to adjust the hue to orange slightly to make the overall color warmer. 

This problem was rectified in the resulting lava monster design. One short coming of the design is that i didn't put much detail into the rocks.