1st impression of the kitchen is that the cabinets are outdated and the chandelier overpowering. I personally like modern, minimalist kitchens so I would change the cabinets to something either white or much lighter wood, change the appliances to chrome, put blinds on the window, and replace the lighting with something simpler. but that's just a suggestion. It all depends on your taste, how much do you want to change and what is your budget.

Same goes for the other rooms - change the blue walls to something much lighter and update the ceiling lights in the bedrooms.

if you want some advice/ideas to decorate, check out: http://www.totalhousehold.com/advice.php

Nice job!

There are also other resources such as http://www.servicemagic.com or of course http://www.TotalHouseHold.com