You're probably not doing anything wrong and it looks like you're putting together a very nice system. From your descriptions and pics, and without me knowing more, my suggestions would be: a) in line with Audiofeil's comments (above) - your table deserves, first, a better arm and second you'll get more resolution, air and improved tonality from a higher-end cartridge; and b) though not TT related, your room might benefit from some acoustic treatment. Just some ideas - good luck.
Tim
Tim