the second is quite cool, but it got 'too much yellow/orange', which makes it too shiny! Some more black wouldn't hurt

In my opinion those photos are not very exciting. A single flower dead centre of the shot is not creative!
Instead try to position multiple flowers off the centre of the shot. If flowers are somthing you enjoy shooting maybe try to get an interesting background.

Not bad mate, in my opinion a bit overexposed all of them.. and they lack contrast, add it and will see, right now they ar ea bit flat.

I don't like focus on first one, it is on the leaf and not on the flower

Sry mate if I'm honest!

Go ahead ugly boss!

Wow.. I like # 1. Sooo nice...