Adding depth and dimension to the padding of boxing gloves can be achieved through careful shading. Start by identifying the primary light source in your composition. Create darker values in areas that are tucked or recessed, and lighter values in areas that are more exposed to light. Gradually build up layers of shading, using a combination of hatching, blending, and cross-hatching techniques. Pay attention to the contours and curves of the padding, as this will help create a three-dimensional effect. Consider adding subtle highlights on the raised portions of the padding to accentuate its volume and give it a more tactile appearance. Remember, practicing different shading techniques and observing real gloves can greatly assist in achieving a realistic and visually appealing representation of the glove's padding.