You can not make a room bigger than it actually is. In times like these, you should weight the options of adding to the space that you do have. If you can only add on a little, it will still give you valuable extra space.
A good place to start your home renovation is the kitchen.This will help you get rid of stains and a lot of the old paint. The more personal your renovations, it becomes less likely that another person will buy the house for what it cost you to do the work in the first place.