As a junior modeler, I always had hard time when I don't have enough reference pictures (up, side, front view)
This time, I only found this up reference picture as image plane. But I also found several photos as reference.
So, I decide to use a lazy way to make a well-topology model.
First, from the image plane, I build a base model for sea turtle.
And export the model into ZBrush to do a quick 3D sketch
Using polypaint tool to do the topology plan
then re-topology the model
Now, I have a well-topology model, but I need to unwrap it.
Also, I use a lazy way to unwrap it.
After exporting back to Maya, I extract the model into arms, legs, heads, mouth, body and tail.
After export the model back to ZBrush, I use the UV master to unwrap the model.
In a second, I got the great UV layout (of course I need to adjust the layout in Maya)