Nice choice of POV (point of view) in the first two... the moveable screen of the Powershots makes these possible without the need for you to flop yourself onto your belly and push your chin into the grass to get such perspectives, right?

And while the colours in the first look nice and autumnal, I am not sure the overall composition can convince me, cool POV or not. The photo is divided in two equal halves, of which the top half does not say anything, it is just superfluous.
The second photo focusing on that one blade of (cut) grass is nicer, compositionally, though it does not feature the amount of autumn colours that the first photo does. The blade in focus is in the right third and its ragged tip in the top right corner area, which I appreciate. And I like the "ant's view" here.
There is not much to say about the last two ... the third is one for the "round foulder" underneath your desk, I say. It is nothing. It has no subject, no focal point, a top two thirds with no meaning at all, and the use of on-camera flash and its fast fading light is really snapshotty.
And the pumpkin ... oh well.
A pumpkin.
Snapshot of a pumpkin, with on-camera flash. No more. Sorry, but the last two just don't work for me at all.