Here’s an interesting tip from the Sales Presentation Training Blog:

Write your entire presentation out and then get some colored markers. For example, for all the facts that you have written down, highlight them in red. Next, color all your humor in green. Lastly, color all your audience participation in blue.

Ok, now step back and look at your work of art. What, you don't see any green for humor? Where is the blue, for audience participation? Even if you are giving a sales presentation to manage $50 million dollars for a pension fund, you will be amazed by the audiences receptivity if you make the presentation about them. Red is a nice color but make sure your presentation has some green and blue to involve your audience.

Try the same thing with your marketing materials.  Use highlight all of the sentences talking about you (your technology, your offices, your expertise) in red, and all of the sentences talking about your clients (their needs, their testimonials, their satisfaction) in green. Too much red?  Maybe you need some new marketing materials.