Yep! It’s basic! Lets take “is it easy to navigate?” first. There is only “Home”, “About”, “Contact”, and “FAQ”! So it is easy to navigate, or I missed something and it is hard to navigate because I missed it. I feel there is very little there.
Thinking about your photos:
Home took me to two photos of a black girl. They are well done. Then images shifted left on their own, rather irregularly. It’s more even if you go back once they are all in cache.
http://static1.squarespace.com/static/54de6101e4b0b72929ba3f1f/54de6173e4b006037283d5ae/54e0ae49e4b0f4a6ba302a86/1424010848893/a6f0470f9006a453f956eafe8633bbfa.jpg?format=500w, feels too tightly cropped.
http://static1.squarespace.com/static/54de6101e4b0b72929ba3f1f/54de6173e4b006037283d5ae/54e0f0a4e4b0cc0f0863ce8a/1424027812864/%3Cuntitled%3E+390+%283%29.jpg?format=1000w, I would lose the orange aperture shape over her head.
http://static1.squarespace.com/static/54de6101e4b0b72929ba3f1f/54de6173e4b006037283d5ae/54dff091e4b0409b0659b23a/1424010358098/kristanicolejones.jpg?format=500w, is cropped too tight and he is looking out the top of the frame.
http://static1.squarespace.com/static/54de6101e4b0b72929ba3f1f/54de6173e4b006037283d5ae/54e0a709e4b0549c367175b4/1424008970821/%3Cuntitled%3E+392.jpg?format=1000w, and http://static1.squarespace.com/static/54de6101e4b0b72929ba3f1f/54de6173e4b006037283d5ae/54e29351e4b0549c367a3bff/1424134997701/a+394.png?format=1000w, have nice colour palettes but why are they in with portraits.
http://static1.squarespace.com/static/54de6101e4b0b72929ba3f1f/54de6173e4b006037283d5ae/54e0f1c5e4b0c4ae29d16a67/1424028101484/%3Cuntitled%3E+391+%281%29.jpg?format=1000w, is a style that is popular now. I’m hoping people get over it soon. To me it says you need a lens hood and/or a lens with better coatings.
On your About page, http://static1.squarespace.com/static/54de6101e4b0b72929ba3f1f/t/54e119c6e4b05ae622645e41/1424038349991/photo+by+kevin+jones?format=750w, shows a pretty face with bad posture. That may just be the pose, perhaps a different one would work better.
“are photos interesting?”, I like the first two. Your subjects and their families will like all the ones of them.
Professionalism? You are doing this for money, right. It’s a bit bare. What’s there is mostly good.
Over all? Good first steps in creating a web page.