plants

Beginner photographer, looking for some advice/critique with the above image, i feel as though the DoF or something else isn't quite right with this image but can't pick out what this is having an untrained eye. I feel there could have been more in focus.

Hello All ! I'm visiting Birmingham Botanical Gardens tomorrow and I was wondering if I could gather some last minute advice from the peeps on the site. I'll be taking my Nikon D5500 with the rudimentary kit lens (18-55mm) it came with. I figure I'll also take a spare battery just in case. I...