I can see you have great ideas, I liked your font in entry 61 as it matches you design better, I really like the oil drop in entry 74. have you any other ideas that might replace the leaf in the center? just for curiosity sake. Your design is grabbing my attention and I have really enjoyed seeing all your entries.
Entry 79 is great, use some shape shadow and depth contrast to give the graphic some 3D quialty and perhaps some sharp black edgings on or in your leaf to portray the color of oil.