"demanding skill" is a valid phrase in written English.
You can use it to describe a task that requires a lot of skill in order to be completed successfully. For example, "Painting a detailed landscape requires demanding skill."
They would have to buck common marketplace wisdom, too: in an economy demanding "skill sets"—defined narrowly as technical and business skills that deep-reading stuff won't get you anywhere.
Taking notes during a lecture is a highly demanding skill and creates problems for students who are learning English as a second or foreign language for academic purposes.
My "HOW", as it turns out, is not some super demanding skill that you need to master.
It requires a demanding skill set that involves both advanced endoscopic skills and knowledge of surgical anatomy and complication management.
Sam and the others soon discovered the physically demanding skills involved in wheelchair basketball.
The Merritt Parkway did not recently become a dangerous road; it has always demanded skill and good sense.
They were harvested seasonally, deteriorated quickly and demanded skill and patience to extract the fleshy "tongues" from a barricade of shell and spikes.
These procedures demand skill and usually more than one session to achieve the desired result.
An affinity for numbers helps: Many accounting majors gravitate toward buying, since it demands skill at number crunching as much as it requires creative thinking.
These changes demand skills in negotiation: "Women are working a lot in Sahelian countries and do not have time to breastfeed eight to twelve times a day.
Football is a physical game demanding great skill and artistry.
