One thing we stress to clients all the time is the importance of good lighting. If you are looking to update your home but aren't ready to fully re-do everything... start with your lighting. Not only do attractive light fixtures give your home a more custom and updated look, but the actual light they give off is soooo much more pleasing than can lights from the ceiling.
When selecting lighting think about what your needs are and prioritize. Do you need a new ceiling fixture? Sconces? Lamps? and then decide what scale you need for each item.
Don't be afraid to mix metals either. Just because your hardware is polished nickel doesn't mean your light fixture cant be brass. trust me on this one.
Don't be afraid to add lighting that is on the more dramatic side. Lighting is not necessarily cheap, but it is less expensive than many things in the home so it makes for a good way to take a risk.
I love how they used a large sconce in this bedroom rather than a table lamp. It adds interest and frees up more space on the bedside table.