I've just had a quick look through and I like the layout - here are a few of the things I would change though:
1) On the home page you have the sentence "You can view my Portfolio, by visiting my Portfolio page. Click here." Both 'Portfolio' and 'here' are links to the same page. I don't think you need both the click here and the underlined Portfolio, so I'd choose one and go with it.
2) The external profiles page links to external pages which do not fit the confines of your site and so they introduce horizontal and vertical scrollbars in the middle of the page, which made me think the page had loaded incorrectly (this is in firefox, so maybe it's a browser issue). You either need to widen your real estate to allow for the external pages, or get rid of the external profiles all together (which would be my choice for a business website)
3) In your portfolios I would remove images which are similar. I noticed you had two in your landscape portfolio where one was in color and one was in B&W. You've also got two mini shots which are very similar (just an angle change). I would personally keep one shot from each shoot you think is the best representation of your work. Prospective clients may think that you are short of photos and so filling space.
4) I would rearrange the photos in your portfolios so the strongest image is the one you first see. Start and end each series with your best wow factor shot.
I also got a bit confused as to why you had a link to TL photography from TRL photography as they seem to follow a similar theme.
Sorry, all that sounds really negative and doesn't do justice to the fact that I do actually really like the layout, navigation and content.I just think it needs to be tweaked.