Nice shots! I think the biggest issue with these photos (with regards to attracting attention to the snake) is that the leaves are parallel to the snake, and lead the eye away from it and toward the edges of the frame. Of course, this is part of the snake's camouflage, so it's doing well!

Here are my crude edits to try and mitigate the effect of the leaves leading the eye away from the snake:

• Cropped the image so you can't be led too far astray. The snake leads from a corner of the image to the center, which for some reason looks good to me. I also made sure not to leave more in the image in the bottom left corner beyond the leaf, because this leaf obscures the base of the snake and gives the impression that it's hiding and poking its head out. In fact, I think the photo could be improved by making this leaf more opaque (i.e. applying a green brush). Showing the snake's body appear behind the leaf on the other side would draw too much attention to the bottom left of the image.
• Added blur to the leaves behind (and parallel to) the snake, and sharpness to the snake itself. Ideally, the photo would have been taken with a more shallow depth of field for this effect.
• Added some brightness to the snake
• I already closed my editing program, but in retrospect I might have added vignetting to further stop the viewer's eye from following the leaves to the edges.

Update:

Added:

• Vignetting
• Increased contrast
• Reduced the brightness of the two major leaves in the shot. The one in the background was particularly distracting.
• Brightened the danger noodle snake a little more.
• Painted over the bottom left corner a little with a green brush.

The difference is pretty minor, but I think it's slightly better.

I think that with these edits, the composition is tight enough that the viewer can already see the edge of the frame in their peripheral when they view the snake, so they don't feel the need to look away and trace the surroundings.

Although honestly I like the original framing better in principle, I think the snake's camouflage is causing a problem and this helps to resolve it. This is just one way to handle the photo in post; do whatever you think looks best!