Helping your friend feel confident and comfortable in his school uniform can be a great way to boost his self-esteem. Here are some suggestions to make him look good and possibly even enjoy wearing his uniform:

1. Proper fit: Ensure that his uniform pieces are tailored to fit him well. Ill-fitting clothes can make anyone look disheveled or uncomfortable. If necessary, consider getting the uniform items adjusted by a professional tailor to achieve a better fit.
2. Accessorize tastefully: Use accessories to enhance the overall look. For example, select a stylish belt that complements the uniform, and ensure that the tie is neatly knotted and matches the rest of the outfit. Small details can make a big difference.