Definitely work on educational resources for management. Authority and reputation require transparent actions, which should be tutorials, free ebooks or other online materials that focus on the best management practices, programs and strategies.

Free content would bring more traffic from Google and social networks. Free ebooks and other "products" can be used for capturing emails. Consider a free email course on project management that you promote with lead capture forms, exit intent popups and others.

Start promoting on LinkedIn and other social mediums, partner with other websites, guest post on blogs that focus on project management or other complimentary services that rely on good project management strategies in order to be successful and profitable.

If you are certified PMI/PMP/PRINCE2 manager, add that to your website. Try to partner with certification authorities and provide services for them with some attractive discount.

There are other ideas that you could implement as well, contact me and we can chat more.