I started with collecting lots of reference and I decided I will be basing my design after a green tree frog. I started modeling from a sphere in z brush and just getting the basic pose and shapes.
Part of the project is to create a made up creature. So I took the liberty in adding tails for my frog.
Then I just worked on the hands and feet as well as refining the shapes.
I added some bumpy texture for the skin to give the creature more realism.
Now to finish my re-topology and I am off to texturing and colors!