Once you've found your perfect dining room table, start investing in a few good pieces for your decor. Wait to paint your walls until you're more settled though.
Finally, you're ready to paint. Once you've found that piece you can't live without, in this case, the fabric for the draperies, you can build your room around it.
More On Topic
Eliminate the guess work and see what your house will look like before you redecorate.