How do you get feedback on your portfolio?

What are the best ways to get useful and constructive feedback on your portfolio?

For example, a service such as Evisors will connect you with industry professionals for resume critiques, mock interviews, and career discussions. You'll pay for the time of someone experienced in the field and in exchange, receive some very good feedback.

I'm looking for the ways other UX practitioners have gone about receiving feedback on their portfolio from those with experience hiring in the industry and the difference it made for them professionally.