Accessories - Help!

Okay - here's the thing...

I bought my dress at Macys Bridal. Now i want to shop for a tiara, possibly a veil, jewelry and that sort of thing... but Macys doesn't have the best selection of these things. How do you do this?? I've been trying to figure out how things might look having nothing but one single picture of my dress and I just can't make any decisions by looking at a photo!!!

Stumped.

Any advice?

Thanks!