This started as a sketchbook mini series which includes a big cat predator, a carnivorous plant and a water animal. I wanted to draw one on A3 paper with watercolors, pencils and acryla gouache. 

Below is the video process and some photos I took along the way while creating this. 

After finalizing the sketch and printing it on a bigger paper, it was time to transfer it to the watercolor paper.

First layers of watercolor are applied to the work

Adding the background - Holbein acryla gouache

continued to layer with watercolors, pencils, and for the tentacles i added the color-shifting pigment. 

Finished painting.