Checking it out now. Lighting has always been my Achilles Heel when it comes to using Blender. You've given me a level of talent to aspire to!! Thank you!
If your using the internal i recommend to check out the arealighs for studio setups and to light objects like those fungi, but with standard setting they don't work very well. try to make them bigger and give them up to 6 samples, to reduce the strengh cut down the range good luck and have fun blending