KrisWood, hard subject with the yellows and greens. They seem too close in contrast to me. I was a newspaper photographer back in the 80's so I always think in shades of grey & black & white. Sometimes I still see the world as an old movie!
have a look at my passion flower test
In this case I had plenty of colour and shapes for the synther to grab hold of. I want to re-shoot again this time getting in even closer for more detail.
Keep shooting while zooming in, then go around a few times geting closer each time............Then hit it with the macro!