Warm or advancing colors have longer wavelengths than cooler receding colors. These are warm.
“Cool” or receding colors have shorter wavelengths so they “scatter” before warmer hue’s longer wavelengths. This causes far away objects to appear bluer (and also the sky above us). In your drawing you’ll want to exaggerate this effect by giving your background more of the “coolest” colors in your palette. If you are working with a warm palette just remember that RED is your warmest, most advancing color.
These are cool.
Before you begin your drawing make a blended 12 color spectrum. Try to produce more “in-between” colors in the blended transitions. Practice using the side of your pencil for blending.
Full 12 color spectrum blended.
Choose a white subject. Place it on a mirror or other reflective surface.
Make a line drawing of your subject first.
Don’t forget to measure…
…and find angles.
Choose warm or cool hues for your drawing.
Map in the lights and darks first.
Continue layering and building up the surface. Remember warmer, more intense hues advance while cooler, dulled hues recede. Notice the difference between the subject and it’s reflection.
Now, try the warm palette. Notice how warm and cool palettes can effect the mood of your composition. When you choose a subject, think about conveying feeling or mood through palette choice.