I'm in the process of painting my Death Guard Helbrute. I've done all the metal and now I'm going to move on to the fleshy bits. I don't want to do standard pink skin or the usual green Nurgle flesh. I want to make it look like the helbrute has Necrotizing fasciitis (you probably don't want to look that up). From my research, the disease causes inflammation in tissue, and eventually, the tissue dies. This creates a pattern of pink to red skin, yellow and green bruise-like edges, and finally black in the completely dead areas. Have any of you painted something like this before? Any advice, tutorials, or guides you can suggest? I'm looking for paint and process advice specifically.
Here are some images of the helbrute so you can see what the fleshy parts look like on him. I replaced the head with a ball bearing surrounded by green stuff. That part will be painted as a cycloptic eye eventually. The midriff is a mix of craft glue and superglue (thanks to Midwinter Minis) to create a stringy texture, intended to be painted as guts and/or muscle. Advice or painting those areas is also appreciated.