@_john_ It’s perfectly normal to feel nervous. I was the same way when I first started but eventually you become confident in your work. @joshuanhibbert has a good point. Doing little side projects to show your talent and ability is a great way to get hired and use for your portfolio. As I stated above, you don’t actually need clients to show this. Also, I would advise you to become comfortable and knowledgeable in development before accepting clients or applying for a position.
What exactly are you looking to find out?