The Bubbles Challenge was an invitation to go wild with abstract 'art'? and you did!
Composition is good, but I find the blue/purple object at top right a little distracting as I try to work out what it is. It is probably something quite easily explained, but it jarred with me.
Technically, I thought this was a great demonstration of the Canon 100mm Macro lens. Focus is sharp, colours are vivid and eye catching. I really like the swirling variations of the bubbles.
Overall, I like this shot a lot, but the area I mentioned earlier does distract from the overall impression, I hope you will explain it to me later. A good abstract leaves you going around and round the picture until you start to visualise your own ideas for the shot. I like it, but it infuriates me at the same time. It scored well and deserved it, but there was that little niggle that stopped it being a winner for me, so I guess it finished at about the right score. Well Done, and go for it with abstracts!
Lots of interesting shapes to look at. Nice colour hues and excellent tonal range. It's a shame about the little "bits" that speckle the image, they dilute the purity of the image somewhat.