It is correct and usable in written English.
You could use it in a job description to indicate that the successful applicant should be able to demonstrate a specific skill, or you could use it in a project brief to indicate that the project should involve demonstrating a particular skill. For example, "We require applicants to demonstrate a skill in web development."
The teacher would demonstrate a skill (Lesson One: Encourage More Than You Discourage!), and we would follow.
Van der Meer would demonstrate a skill, explain its importance, and then we'd all go back to our courts to practice.
I was part of a team that delivered resilience training to military personnel in the US Army, and as part of the training delivery, I was often selected to demonstrate a skill in front of the plenary group.
Have them demonstrate a skill from floor, such as a roll, or split.
If they are not too busy, ask an older gymnast to demonstrate a skill for you.
During her three stints as the leader of the conservatives' party, she demonstrated a skill in rallying support.
His collections demonstrated a skill for playing off classic American sportswear ideas, changing them slightly by pumping up the color, modernizing traditional coat shapes with textures like a popcorn knit instead of a flat wool melton, or covering a Fair Isle knit sweater in beads.
There's a recruitment process that challenges the applicants to demonstrate a variety of skills they'll need for the six-week programme, including creative judgement, lateral and strategic thinking, entrepreneurialism, insight and understanding and presentation skills.
"It's almost impossible to fathom," he said, referring to Jagr's hat trick, in which he demonstrated a different skill with each goal.
However, process-based assessments where students are given the opportunity to demonstrate that they can apply their knowledge in real-world scenarios offers some middle ground for consideration between content-based tasks and actually demonstrating a learned skill.
"By this I mean a film that feels cheap, that demonstrates a little skill and a lot of passion.
