Ok, because you asked, I will start with the small and move up. Some of these are nit picking, but you asked.
1) You have your own domain, but you use a gmail address for your contact. You need to set up email for your domain. Using gmail shows lack of commitment to your customers.
2) Everything in your about section of your website lets me know that this is a part time gig for you, you have another day job so if you don’t make it no big deal and you touch very little on your past experience, but you did get a new camera in 2008, so I must assume that is how long you have been shooting. Again this does not scream consumer confidence.
3) In your FAQ, do people really ask you if you will work hard to create some great shots for them? You should have that dedicated more to what people need to do to prep for the different types of photoshoots.
4) You need to reduce the volume of images in your galleries; one or two of your strongest images for each model would be lots. As well you need to get some images in portraits, it is hard for someone to book you for portraits when the section on your website just says coming soon.
5) Post your prices, I think customers like to know what they are going to pay. Even if they are just a starting point and the package can be customized, if they have no idea what it will cost, they will not call.
6) "Oh the date we decided on won't work, I'll have to get back to you with a date that does." Then she stopped responding to me” Well that could mean that they want to cancel but don’t want to come out and say it, or it could mean a lot of things. Just send them a nice email letting them know that should they care to rebook in the future you will be happy to work with them and move on.
7) “So, why can't I get anyone to see that my work is worth paying for instead of going to those "Family shoot for $25 and you'll get a disk of high res images" people? All they go for is the really cheap awful photography from amateurs.
” Because your customers have not been educated to the difference, not just in image quality, but also to services offered. You need to teach them that you sell a superior product and then show them. List your products you can offer, (Canvas, Books, Prints, Framing etc) let them know if ever there is a problem with a product whether it is a week from now or 5 years from now you will make it right.
You need to create a strong presence that lets your customers know you are here to support them and you will do what it takes to get the job done. As I stated before I would look into the local chapter of the PPA, when I joined the PPOC (Canada) it changed my business dramatically and it changed the type of clients I had.