Post your photo exposure/iso information. The photos aren't bad.
Here is my thoughts.
First, a photo of a green zoa is only going to be so vivid. The subject doesn't have a lot of colors so you can only do so much.
The 1st photo has good depth of field but lacks sharpness and is nicely framed. This may be due to focusing issues or shooting at a high ISO setting. Try doing the following (if you are not already)
- use tripod / flow off
- manual focus
- if handheld - make sure you shoot at speed above 1/125
- use your viewfinder and magnification function to enhance focusing; my canon has a feature (which I think you should have) where you can see the image on the electronic viewfinder, you can then magnify this in the viewfinder and really get a handle on focus
- shoot at a lower ISO (try another one using Ap priority at the same aperture setting and ISO manually set at 100 and let the camera figure out the speed)
I like photos with rich color saturation where the color really pops. I often shoot at -1/3 to -1 exposure to get this. Play around with take a few shots that are under-exposed to see what you like.
The second photo needs work on white balancing. Try shooting with a higher color temperature setting. With strong actinics you will likely need to do some post-processing in photoshop (or similar) to address the white balance issues.
Here is what I mean by color saturation (making the green really pop) - I think I have the same zoa's
IMG_4764