I absolutely love the last two shots. The style one is a great composition, and pose by the model (your son?). It's made me grin, so job done! If I was to be critical, I'd say you'd need (and bear in mind I've never used flashes, so I could be way off here), either a reflector at the lower left of the shot, or a flash with an umbrella? (really not sure as I have no experience at all in this area, but a bit of soft fill light is what I mean).
As for your third, I think that's just great! It reminds me of late 40s/early 50s adverts in America (that I've seen, I'm not American, or that old; although I feel it!). Lovely warm photo, great composition and really simple looking (although I have no doubt you spent ages getting it right!).
Ace job mate!