Just had a quick look.
I would say it looks a little jumbled whilst looking empty
Everything seems to be squashed in, maybe it is just my screen size, but on opening up the home page, the text runs right to the edge of your picture, it should't, everything should sit in it's own space so it is clean and clear and easy to take in.
Your black and white picture is really nice, and gives an idea of someone who is really out going, switched on, determined, strong, fun, healthy and energetic, maybe reduce the space it takes up though. It does give you a feeling of wanting to know more and getting a feel of what your upto, so more of this would be good for the site.
I would either switch from the black or introduce another colour with some blend, maybe some graphics to give it depth whilst softening the black.
The listings for Home, Gallery etc, may look nicer sectioned off down one side. Or have a stronger header band and run them under that.
I would like to see and expected to see lots more shots of you on track, in the pit lane type images, lots going on, you in racing suit bonnet up, talking over tweaks with support team etc etc
Maybe you don't have any, can't you get out to a track day and get some taken, made up stuff/possed.
The girly shots are cool, I actually prefer the style of the black and white one, feels more one on one than the studio shots. Again, drop the scroll bit, open the page up more and select a few and have them all open up in a grid, again, maybe have a few glam shots as you have, but also some real time pictures - still with a sexy edge, maybe some shots of you in the photo shoot camera on camera on model type of thing, then a few chilling out looking over the shots etc - just have someone with a decent camera following you about taking shots while you don't try to pay attention, so that it is a little fly on the wall type thing.
Sponsors, Lets promote this page, after all, if you want sponsorship, then make it a place they want their logo?!?
Each sponsor should have a designed designated section with logo - create if one not available.
Now, to promote area, what about a running advert band that flows along the bottom, like a we have on this page, make people see where they will be being promoted, actually, looks at the style of the virgin banner, some nice eliments there, could incorp into your sight??
All all in I think it is ok, but think each bit just needs looking at, and spend some time planning out the page, looking at other sites to see what looks good and what doesn't and then sketch each page out so that your web designer can see what you want.
Matt