I am looking for some advice for gaining the skill of getting something down on paper/screen quickly. I am a 3D artist but would like to improve my 2D skills so I am able to sketch out an environment and then rough out its lighting before actually taking it in the 3D world, or rough out a character sketch before sculpting. A quick sketch in painter or photoshop would mean the world.
I have got loads of books and have fluctuated from being embaressingly bad to 'not terrible'. I have been spoiled I guess by taking online classes with Alex Oliver and Jesse Sandifer in sculpting and have found such an encourging improvment with mentored training from sucking at sculpting beforehand.
Thats what I am looking for with sketching and sketch painting. Can any of you recomend a workshop, online class or something similar that caters for a total noob in need of some training?