I think that when challenged by windowpane or tattersall designs you have to play with proportion of design to design. Without sounding to complex in this exercise remember one element has to dominate the other or you get a fighting reaction to each design.
I like rep stripes that are bold, medallions, paisleys or small polka dots and solids. As for color, I think that on a shirt that you have shown us, you have many opportunities to explore. Wearing a solid navy tie is not very imaginative to me. There is more color available in neckwear today than there has been in a long while. Hope this helps.