Start the work by drawing two ovals & a curve line.
Draw two ovals & curve lines.
Make head, eye round shape & face.
Draw nosehole, eye & retina.
Make arms, hands, legs & feet.
Draw outline for body.
Make tongue & round shape as shown. Also draw dots all over the body.
Finally, make necessary improvements to finish.
How to Draw a Green Tree Frog with Color Pencils [Time Lapse]