Find other people in your niche and see if they will agree to letting you work out a guest blogging schedule, start with just one article, and build the relationship from there. You should offer to publish their content on your site as well.
Remember, if you’re good, and I hope you think you are, you shouldn’t worry about losing out to competition. Make the content for both of you things that compliment or supplement your brands.
You might think about doing video interviews (easy over Skype) to show that you’re both real and besides, everyone loves to watch things more than they like to read them. Studies have shown video is the best way to sell products and services.
All of these things together can only help make you look more reputable and sharpen your image.