One of the best ways to get the most out of Custom screen printing textiles and sportswear is to use the color of the garment to your advantage in the design.
When designing artwork for screen printed garments, allays try to factor in the fabric color. you can use it as part of the design, thus limiting the amount of ink and screen print set up charges. It can be used to alter the color of the inks being printed as well. Using a limited white underlay or base under some areas of color and not others can create different, tint, hues, tones and effects with Stunning results. None of which cost more in the silk screening process.
Don't just stick any design on any color shirt. Use the shirt color as a design concept and get more out of your custom printing. really it only takes time and thought. the results can look like it took more money and printing when that is not the case.