Is it just me, or is the tarp just a little bit too small...

When I lay in it, I've generally been finding that the fly net peeps out under the bottom and I can see almost 360' around. Which is lovely in the morning and when it's dark, well, it's dark. My main problem is getting changed.

Similarly, when it's very windy, The tarp lifts, and in heavy rain (whilst I've not had that yet) I could get wet.

Any ideas? Am I just hanging it wrong?