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You're missing the 10k pull up resistor on the Reset pin. Never let it floating or you'll have unreliable results. Also, the crystal capacitors are 22pF not 22uF. Make the trace thicker for ground and servo power. Don't forget, you will also want to attach sensors to this board, have them connected to 5v regulated, not servo power.To fab the board, try out Sparkfun's Batch PCB service.
It's $5 per square inch for three copies of your two layer design. So, a 2 square inch design would cost $10, and you'll get three copies of your board. Shipping within the US is included, and there are no setup fees.
The xBee uses only the Tx and Rx pins to communicate with the microcontroller. Same thing with a Bluetooth module. I don't know about the real time clock (RTC) module. The only modification I would suggest is to move the connection for the LCD E (enable) line to pin 6 and the RS line to pin 7. This way you will have Timer2 available for the Tone library, in case you want your robot to play Beeps or simple songs for entertainment. Just make sure you mod the code for the LCD accordingly.
ok, so i think im getting used to eagle, ...P.S. how do you make measurement in the PCB layout thing? i need to see if the LCD whud cover the buttons.
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