Sometimes it can be tricky creating portfolio items or case studies if you're not used to it. You need to write the copy, which involves knowing which parts of the story to tell in which order, which metrics to include, and things like that. You also want the copy to frame you in the best light. Aside from the copy, there are grabbing the right visual assets and any testimonials as well.
I've created dozens of portfolio items and case studies for myself and other freelancers and agencies. I can help give you some personalized tips on how to do yours.
With no hesitation, David Head is a leader, talented designer, and demonstrates all the necessary qualities you want in a team member. I've worked with him for 5 years now, and have seen him successfully build great products, manage team members, and personally consult hundreds of people. I attribute a lot of my recent success to him being my mentor and someone I look up to all these years. He is always willing to help and provide the most value to his colleagues and clients no matter how busy he is. It is clear that he has a passion for technology, and is always striving towards improvement and growth in this field.