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Hi, Sury;
These shots are most elegantly done, in my opinion!

Well done.
The subjects are nicely composed, in relation to their physiological structure.
The subjects' backgrounds are free from clutter, and their out-of-focus elements are nothing but complimentary and pleasant to follow with the eye or the background is a blurry blob of a cactus -like the 1st image- which is the complete opposite of the subject and all these work good.
I like these images very much.
Thanks for sharing and keep glorifying your lenses individually for what they can promise technically!
Yildiz