Okay, I will try some constructive honesty.
The navigation buttons need addressing, they look too template/standardised (capsule?) as already mentioned.
Definately check with your Clients that you have permission to replicate their logo/image on your site, some companies are very strict with this. From my past experience with "Johnson & Johnson" they do not let anyone use their brand to advertise their own services. Some companys such as J&J have strict usage guidelines, pantone colour references, logo sizes/proportion etc.
If you are going to use their logos, try to get the images in a far better resolution. The "Boots" logo appears to be cut off at the top.
I assume that the "Request a Quote" should be a button to click to request a quote which is linked to your email? This doesn't seem to work, unless it is just an image.
There are at least 7-8 different greens which don't really compliment each other well at all, try think of a new colour scheme in-keeping with your corporate colours.
I actually like your logo. Perhaps you could rethink your logo along the lines of having the text "The Printed Bag Shop" on the bag itself, this would do two things, firstly obviously The Printed Bag Shop is your company name, and secondly these words appear printed on the bag itself, kind of ironic but it should work.
Really don't like the navigation buttons (capsule like), I prefer rectangular myself but just my preference. Colour scheme needs a re-work.
Instead of having "We accept these cards" text, how about "We accept the following types of payment" or payment methods. Just not sure on the sound of "We accept these cards". Can you also offer any other methods of payment e.g. paypal?
On the header image, the sales email address could be linked so when someon clicks it they get to send you an email (is convenient for the user as it saves them having to re-type the address into their email client, also mitigates the risk of them entering it incorrectly).
On the header image, "Suppliers of bespoke printed bags" is a little unclear, perhaps you could make this a little clearer without overpowering the logo.
Just my thoughts, just trying to help. If you only agree with a couple of my comments its been worth writing.
Regards
Matt
P.S. Hope you did'nt pay your web designer too much for this, perhaps it was a favour.
I think its the age old problem of there being no guarantee that you get a defined quality of job for a price paid, so some people tend to go cheap so as to limit their risk.
