This is harsh but...
The whole website screams "GWAC."
whenever I see websites that are TRYING to get the portrait business but their portfolio is chock-full of landscapes, wildlife and, well, anything BUT portraiture, I immediately think GWAC. It says to me that you really like doing landscape and wildlife photography but you're only doing portraits because there is money in it. I can pretty much assume that your heart isn't in portraits, it's in wildlife and landscapes.
Anyone can buy an entry level DSLR from Costo and a cheap prime and get the portrait shots in your portfolio. If I'm going to pay to get portraits done, I want someone who knows how to use off-camera lighting outside, I want someone who knows how to pose people in a flattering way. I want creative, unique portraits, and I just don't see that here.
The watermark on the photos is a played-out font straight out of MS Office suite, slapped on in Photoshop or LR, and just screams GWAC. If you're going to watermark your photos, brand it! Because anyone on Windows can copy that watermark.
I see some shots on your site that miss the focus. And some shots I just don't understand at all -- one of the couples on the site is obviously photographed in their (or your?) backyard. That's fine for family snapshots, but I don't know - I'm sure there are more compelling places to shoot in your area, rather than a suburban neighborhood. This, to me, screams lack of creativity. This is a very competitive business!
I can't say if a client -- especially someone with no understanding of photography -- would think the same way, about all I wrote, though.
I know you said you updated the design of the site, but it still looks very '90s/Geocities-era to me. This is the kind of site I would've made back in 1998.