hmm, ... no.
Saurav, the fake scattering is still too strong, plus there's that wrong looking light blueish tint on the tall ones.
And the undersides are not realistic either. You seem to be mixing two cloud layers, which have different colors.
Overall it looks to me like your're getting further away from what worked well in your previous images.
I suggest you get back to a previous version and start again from there. Looking at your last image again, the suggestion on reducing the fake scattering was a good one, but you have to reduce it much further. Now that I had that second look at the previous one, I also see this strange blue tint there.
Oh, and a last tip: the warping it too strong as well, as it disorts the little "bubbles" too much.
happy, continued rendering :-)
Cheers,
Frank