To me the qst shot is OOF (out of Focus)
The 2nd shot the focus is better but the focus seems to be more on the green fuzzy stem than the bug to me. Still a good shot
The 3rd shot to me may have been better if the apature was open more to blur more of the background.
The 4th has much better focus to me even thogh the subject is kinda boring... Again if the apature had been opened more then the dull blue sky may have not been such a blank void.
Good work and at least you are getting use to your S5 and have a willingness to learn more.