Starting with drawing the character and then creating a mask. I'll most likely do the same for the boat and then jump straight into painting the wave.
It's kind of tricky to figure out a pose that shows off the design, while still keeping the action and story of the image. This may not be the case for everyone, as I want to capture both the feel of something "emerging from the depths" and also show as much as possible of the character itself.
For it to look like the "attack from below", I will need to obscure some of the design and turn it into more of a shadow inside the wave. In order to not loose too much of the character within the wave, the pose of the character must counteract that.
Thus, I tried to push for more of an explosive leap kind of thing. I don't think I'll be able to showcase the propulsion idea I had for the lances though.