Some tips here for ya:
Don't use Entertainers. Avoid them at all costs. Use the luxury slider instead. If you use entertainers, you lose food, shields AND gold. If you use the luxury slider then you just lose gold, but maintain food and shields... and you keep growing, which gives you more of those AND gold. So it balances out in the end. To summarize: Entertainers are evil.
You should only build Settlers and Workers from larger cities. Right now Washington is only size 1, and produces very little food, shields or gold. If you only build Settlers and Workers from cities that are larger you get more of these even after you lose population, allowing you to produce more and faster... including Settlers and Workers. So ironically enough, if you wait until your cities are larger to produce Settlers and Workers, you'll be able to produce MORE of them FASTER.
Your cities are probably a bit too far apart. As a rule of thumb, I generally build all of my cities either 2 or 3 tiles apart (though there are a few exceptions). Since cities won't work all of the tiles in their radius until much later in the game you won't need cities so far apart. By the time your cities CAN use all the tiles in your radius, you've already built enough units, improvements, etc. to win the game. It also reduces corruption in cities that are closer, allowing you to produce more.
Your # of Workers is pretty good, might be able to use a few more though.

Should definitely have more military units though... especially since most of your army is obsolete Warriors who won't do you much good in a war. Shame you don't have any resources though... but that's an invitation to build lots of Archers and find some.
For more tips (mainly on economic development) check out my article in my signature entitled "Case for Food." It gives lots of tips that are very useful for players trying to make their economies stronger.
