The best way to create an atmosphere (fog, rain, sunrays, smoke) is to pint it with Soft Edged brush with flow set to about from 2 to 10 %, depending on the tablet and the drawing manner itself.

So I will just create some atmosphere now.



I’m adding some shapes to have my structure more solid like.















I’m also adding some highlights on the fly. Here is important to always keep in mind where your light source is. We have the light coming from left top somewhere.