I never thought that pros makes the better images, they just have to make a
living out of selling them.
On the contrary, if you just shot for fun, it's much easier (though still hard enough)
to find an own style and to make great pictures and great art.

As for the pictures,
the first one is really outstanding, a precise description of the situation in just one shot.

The rest is great, I would give them still 3 thumbs at PSig, but nothing that
would move me for a long time, certainly it's just me but they "don't talk to me".

cheers