Oh you don't need to tell me about being super fussy with your own site. I had the exact same thing. I find that I try to do something that's slightly different but more often than not it doesn't look right in some way and I'll spend an age trying everything to make it work, only to decide 5 hours later that I'm just going to change it for something else, haha. I haven't even finished my site either! It's fine, all part of the learning really.
The only reason I asked about your photo is because it looks like you've gone to town with the smooth tool on your skin!
I tried it again twice, still not getting any thank you message. Win7 Firefox 13.0.1
As for the slider, well let's put it this way. I consider myself to be a very technologically competent person. If I couldn't figure out the controls of the slider then your average joe business person is most definitely not going to be able to. To include keyboard controls without any mention of it, as if it were at the status of web standard is wrong.
I've noticed something else too, note the odd jagged lines on your creative process image in the slider? It's because the image is being compressed too heavily. You need to take that image into photoshop and reduce its actual size on the website, the same goes for your photograph on the about me section and any others that are oversized. They also load quite slowly, I'm on a 50mb download connection.
Try to get your Learn More boxes to line up vertically as well, it always looks better! I imagine that you have tried, as for me the custom logo design text is only made one line longer by the last word, perhaps a resolution difference (1900x1200).
I also want to mention your footer. I think it'd be more of a unison design if the highlight effects of the footer nav were the same as those in the dropdown menu of the header. I reckon the dropdown menu would look perfect if you made the hover effect of each box change entirely to the mustard yellow colour, as for me you currently have a grey 1 pixel line above and below each section which ruins it a little for me. Also, see what you think of each social icon hover effect changing to the same mustard yellow you've used for the primary design elements.
The only, very last, positively minuscule detail that I can pick up on is that I don't think the bird drawing for the twitter feed looks too great. I think it's the body, it's quite an odd shape.