I had a go but mine was not very successful in the end (here, if anyone really wants to see!), so I decided to have another go at the weekend!
This was the outcome:
I much prefer them to my last attempt and may even be beginning to like Saran Wrap mani's!!
This time I chose to use more contrasting colours, to make the effect more obvious, as I felt this was the biggest problem last time (OPI, Where Did Suzi's Man-Go? and Barry M Black). I also used a 'dabbing-off' technique, rather than dabbing the second colour on, which I did last time. I think this was much more successful! :)