Concept artists - India

Reference Database is a free collection of game screenshots with assigned tags that describe the images' content. This database answers the question "How it was made in games?" so if you look for the rocks just type it in the search box and the result will be a list of game screenshots with rocks. It will help you plan and execute design ideas or the look of your graphics by setting up a benchmark - the reference from different game titles.

http://www.gamasutra.com/blogs/MateuszPiaskiewicz/20140817/223513/Composition_in_Level_Design.php

Picking Colour simplify your painting into different regions. Design the lightness value and colour of each region first, then simplify the tonal and colour changes. Limit the colour & tonal change inside each region to avoid the details overriding the overall distinctiveness of each region. The distinctiveness (and contrast) of each region in your painting is a powerful tool in conveying the spatial depth and tonal distribution. keep in mind of the consistency of brush strokes,use different brush strokes/textures to express each material, and beware of how brush strokes fit into different spatial depths(Foreground/Background) (the bottom of right) You can see how the colour was separated here, The tonal seperation was made clear. when you add the details,  it should be limited to the values specified in this range, in order to keep the overall sense.

https://www.youtube.com/watch?v=pmbPoUdF-ik

Google sketchup to Interior environment concept workflow by UnidColor http://unidcolor.deviantart.com/art/Steps-2-243887819

http://www.3dtotal.com/index_tutorial_detailed.php?id=1881#.U5hIqfmSw40

http://nebezial.deviantart.com/art/a-dinosaur-scale-tut-62206529

http://www.pinterest.com/pin/151433606195360615/

 A morning dose of awesome http://www.artofscholes.com/

Tons of refs http://fvsj.deviantart.com/art/WWII-UNIFORMS-14-347528648

http://www.artnatomia.net/uk/artnatomy2014.html

http://www.youtube.com/watch?v=ojOawyFDw_A

http://www.skyscrapercity.com/

https://www.flickr.com/photos/thoog/sets/72157600330606163/with/4221247792/

http://nathanfowkes.blogspot.in/ Don't forget to check these quick sketches! Great to study brush strokes: http://nathanfowkes-sketch.blogspot.in/

For those who love creating stylized characters. nice clean process http://www.pinterest.com/pin/564638872004674594/