I love the shot and don't think you need to do anything to the colors.
...what about a little contrast?
A few suggestions for what they are worth.
1. Composition- I'd just really work with the angles and framing here to come up with more dynamic shots. Look at the entire right 1/3 side of your image, All I look at is that little weed popping up in the foreground. Now if that weed was the snake's food, that's a different story. Then the snake head is just kinda floating in the middle, with no more significance than the rest of the image. My eyes don't know where to look.
I want there to be something in the foreground in the bottom left of the image to balance with the flow of the head.
An even lower angle would also give a more unique perspective. I don't want to get that close to snakes, but it looks like you are fine with it, so you have the ability to show people something new.
I made a quick crop of your image to show a different visual flow. I wouldn't necessarily have cropped this shot square, but from the image you provided, it was the best I could come up with.
2. Focus- I'd make sure you nail focus on the snake's head to make it pop out at you. The top of his head looks like it is behind the plane of focus.
3. Contrast- It is pretty flat. Even the histogram I pulled looked like it was missing the whole right side.
The macro is cool, but again, it's a standard straight on shot. Play with angles and composition!
Thanks for the suggestions!
As for contrast - it's actually interesting. This is what a normal boa constrictor looks like (random image pulled off of a google search...
This animal has lots of contrast, obviously.
The animal in my pictures has actually been selectively bred for several different traits. The first is what's known in the hobby as "pastel" - it's basically just a reduction of black that gives a washed out look. The reason this is so popular is because as they age, most boa constrictors darken and the little black specks increase in number. This trait is an attempt to minimize that to allow the color underneath to remain move vibrant and appealing as an adult. "Pastel" is a polygenic trait in boas (like skin color in people).
The animal in my pictures is also exhibiting another trait known as "hypomelanism". For those without a background in science, "hypo" means under, low, less, beneath, etc. (think hypodermic needle - a needle for injecting under the dermis, or hypoglycemia - low blood sugar). Melanism refers to black pigment. So, this animal has less than normal black pigment. That sounds like the above trait, but it's very different. The above trait just kind of washes the dark pigment away, the hypomelanistic trait actually removes it to a large degree. It's especially noticeable in the latter half of the body - for instance, look at the first picture and at the lower left corner - those orange blotches (known as saddles) are generally surrounded by black but in a hypo, the black has been mostly removed and the color underneath shows through. Hypomelanism is an incomplete dominant trait meaning when a "hypo" is bred to a normal animal - 50% of the babies will receive the hypo gene.
So, this boa is a pastel hypomelanistic boa. It's kind of a double shot of black (contrast) reduction - so it should appear to be absent of contrast.
This animal is also hiding a trait. What I mean by that is that it also has a recessive trait - albinism. Albinism is simple recessive meaning BOTH parents need to contribute the gene to the offspring for the offspring to express the trait. In this case, the mother was an albino and the father was a pastel hypo. So, this animal received the pastel and hypo trait from dad (low odds of happening in one animal) and one copy of the albino gene from mom. So, when this boy is bred in the future, if bred to an animal with one or two copies of the albino gene (either non-visual or "heterozygous" like my male or a visual albino aka "homozygous") he could produce pastel hypo albinos which are GLOWING pink/orange animals like this:
Again, the above image was just pulled from a google search.
So, adding contrast to the photo (I did play with it based on your suggestions) actually end up misrepresenting the animal and actually, in a negative way. People want the washed out coloration and pay more money for it as it results in more beautiful hypo albinos (known as sunglows in the hobby).