DSC_4531234-3.jpg is really classic; the closer crop does eliminate distraction from that leaf on the left. Highly successful! Also the photoshopping job is very well done; it’s very hard to see that it actually is photoshopped.
And the camera straps flapping in the breeze do give the (true) impression that the camera is actually falling. If you would have taken a studio pic of the camera and photoshopped it in, it would look a little ‘frozen in space,’ and very fake. As is, the picture looks very genuine.
One slight thing I might comment on is the slight reddish hue. (Compare DSC_45312.jpg and DSC_4531234.jpg for comparison) Maybe if the hue were slightly more yellowish, it would make the whole image look warmer, more friendly. As is, it is a little bit too red (imho).
Over all, very well done.