It can be noticed that I change the remote's design to make it less futuristic and more logic.
Colour, I consider as suitable the sketches' colour test and I create a multiplying layer over the line drawing. Over it, I have placed the sketch so that it is scaled to the final image's resolution. I used the sketch as a colour base and I started painting with colour stains.
I eliminated the T-shirt's lines, in order to get a better definition of the clothe's wrinkles and shape. I then created the lighting effects of the the robot's focus in two layers: linear dodge for the most luminous part and colour dodge for the most stumped part. I then created a multiplying layer, where I paint the T-shirt Lines.