So I've two things to add to this discussion:
First, a method for generating radial arrays of shapes to make "such perfect shapes".
The big initial circle is for reference only; the guides crossing at it centre are fro snapping. I grouped my initial single squiggle and its two associated dots, selected the Rotate Tool, and with it selected, left-clicked once at the intersection of the guidelines I'd drawn at the circle's centre. This shifts the rotate tool's centre-of-action. I then rotated a duplicate of the initial squiggle-and-dots.
Rinse and repeat till satisfied.
Delete centre reference circle, select opposing pairs of elements, and recolour as needed for best effect.
And secondly, the shutterstock licensing info:
So if you want to use their design content, this is what it will cost you to do so. As @user287001 so correctly commented, even if you redraw that other designer's work yourself, that woulds still be a literal copying of their copyrighted designwork - and either you pay up-front for the license, or you pay way more later when you get sued and they handily win, getting both back licensing fees and liquidated damages - really not a worthit approach at all, morally, legally or financially.
Hope this helps.