Ralph McQuarrie
Some of Ralph McQuarrie's notable works as a concept artist consist of the first three instalments (IV, V and VI) of the Star Wars movies, Battlestar Galactica, Cocoon and Indiana Jones: Raiders of the Lost Ark. Paint was his primary resource for concept art. Colour, light and line are extremely important elements to his pieces. He uses light to draw attention to the action in specific parts of the piece, as well as giving an indication of speed in many instances. For use of colour, he typically picks rather dimmed, monochromatic colours, then deviates from this colour scheme with one or two (If two, usually complimentary) brighter colours (Such as the red and orange used for the lasers in the middle right image) to catch the eye and make the image more exciting. As for line, he seems to favour a two point perspective.
All of these pieces of art depict some sort of spaceship, which is the primary focus of my project (Both as enemies and the protagonist). They all draw attention to the ship in each respective image. A variety of different methods are used to achieve this, such as the rule of thirds, contrast and colour. I like the use of lighting in these pieces as a means of demonstrating speed in each image whilst still highlighting key portions of each piece.
Hans Palm
This is a picture of the "Pioneer" ship from the game "Fractured Space", a cooperative, tactical shooter set in deep space. The ship itself was designed, modelled and textured by Hans Palm. His work consists of many different designs for spaceships and guns. He has twelve years of experience working with 3ds Max and Photoshop, the programs he used to make this specific piece.
Colour seems to be the primary focus of his piece. Blue is used to give more of a cold, energetic sort of feel to parts of the ship that wouldn't be populated (Such as the thrusters), whereas the more hospitable areas of the ship (Such as the deck, visible at the top) are more of a warm, inviting yellow.
I like the patchy, rough feel of the ships, as well as the use of colours to give clear visual indicators of different types of areas on the ship without needing an inside view.
James Clyne

This is a piece of concept art, depicting the Narada from Star Trek: Into Darkness. It was designed by James Clyne, who started their career in the games industry, working for companies such as Sega and Activision before moving on to pursue further development with entertainment design. Some of his other works as a concept artist include Transformers, Charlie and the Chocolate Factory and X-Men 3. He seems to have used PhotoShop for this piece. He seems to favour dimmed, greyscale colours and a more distant, dim lighting, giving a sort of threatening demeanour to the ship.
James seems to be trying to draw attention towards the front of the ship, as this is the only part of the ship with any sort of illumination. The ship itself has an extremely rough, jagged feel to it, with many parts being serrated, almost appearing teethed. This gives it more of a dark, intimidating feel, indicating it's an antagonist's ship, rather than a protagonist's.
I like the way the piece isolates the ship, and uses the Enterprise, the protagonist's ship in Star Trek, to give a feeling of just how big the Narada is. It gives the ship an intimidating, unsettling air to it.