Hallo vnayak and welcome to ThePhotoForum.
So we have another member from India here. Nice to see that part of the world coming here with more and more members.
As to your photos ... the last of the series, the double exposure, happens to be the only one I still see while I am typing this so let me comment about it first: I am not sure it is very flattering to that child with his big eyes to have the elephant trunks "grow out of his upper lip and cheek" (that is what it looks like to me). So I am not too happy about that. Did it happen on purpose or by accident?
I really like the girl with the big eyes. I think it is your Photo 6 here (one suggestion on the side: next time you post please put spaces between each of your photos so they don't "flow one into the other", and give them numbers - that makes commenting on an individual one much easier). She is so cute. The picture might have been a bit better composed if you had moved the camera a tiny bit further left so her face would not be in the centre of the frame, but a little on the right (that would have had the second positive effect of not capturing the one child's bottom in the background, too).
All in all, "centredness" is something that I see in most of your examples here, and it comes naturally, since the camera primarily focusses automatically on what is in the very centre of your frame ... but you will find out that photos look more interesting when the motif is placed a bit off centre. You can let the camera focus and then shift it just a bit to the left or right while you keep the button half-pressed. When you have rearranged your composition, you "shoot" . See what I mean?