Step 7 - Effects
And finally I apply the effects. So there's a few things going on here so let me break it down in parts.
Part 1 - Wind
Storm's costume plays an important role in communicating the direction of the wind. To help this along I add long bright white lines that represent the direction of the wind.
Part 2 - Rain
There are three things you need to do in order to render rain properly. First of all the droplets of rain need to be Parallax. What this means is that in the scene there need to be different size droplets of rain in the atmosphere. You go from long to short lines, quick strokes with the pen. The shortest lines represent the rain droplets that are in the distance behind the character so make sure that when drawing these small rain droplets not to put them in front of the character. In a more complicated scene with foreground and background elements, rain can also be used to communicate depth.
Secondly rain should bounce off surfaces so identify the direction of the rain and the volume of the objects and draw rain splatters. The Splatters are simple to draw, unlike the flying droplets they're tiny dots and spots that clump up together in certain areas. Once again this can greatly help to transmit a feeling of 3D volume to a mass.
Finally rain should have a tail. When drawing rain droplets keep in mind line weight variation to give the droplet of rain a heavy 'head' and long narrow tail.
Part 3 - Lightning
I added a lightning arc that starts from Storm's eyes, slithers up her arm and finally shoots out of her hand. This is hand drawn with the gPen. What to keep in mind about lightning arcs is that they are a collection of particles that start from a root stem and spread outwards in a vague triangular shape. Lightning behaves a lot like rivers and plant roots. Everything starts from a delta. a source point and spreads outwards in smaller branches.
All of the above effects have been drawn on the same layer, once again with the Add (Glow) blending mode. This layer is above all others so as to allow the effects to cover Storm.
this concludes this Step by step presentation. As usual I'd like to hear what you guys think.