First SMD Design Comments / Input before Manufacture
#1-#8 beware of the autorouter routing traces really close to pads or at awkward angles, if the pcb fab is cheap and the soldermask is a little off, the track that is close to the pad could be uncovered and you get solder bridges. It costs nothing to space your SMDs (#5) a bit more, or push some traces around.
#8 without heat sinking, this 7805 won't be able to dissipate the power you intend. If the 1A load is frequent, I'd use a switching converter for efficiency and convenience of not having to bother with a heat sink. In fact it would probably be much simpler to power the whole thing with a 5V wall wart.
#9 The vertical barrel connector could make plugging connector #10 awkward.
If the three headers on the right go to analog inputs, then they need at least some filter caps. Possibly ESD protection.
When putting mounting holes, use pads instead of holes and make the pad a little bit larger than the size of the head of the screw you'll put in. That way you'll easily see if the screw head collides with something. If you use plastic standoffs that only take space on bottom layer, still a good idea to define a keepout zone to prevent a SMD from ending up in the wrong place.
I don't see any caps on the xtal.
GND routing uses the same thin traces for pots (presumably analog) and servos, could add noise to analog signal.
Image resolution is too low and bottom layer is not readable.
Placement of decoupling caps is no good, again beware of autorouter, it will route GND and VCC all over the place and say &quot;done!&quot; and then you get long inductive traces and therefore problems. The purpose of a decoupling cap is to reduce supply impedance at HF, and long inductive traces do the opposite. If you have a ground plane on the back, connect your decoupling caps to it with vias.
An extra 10 ground vias would remove lots of traces from toplayer, maying routing easier.
...and don't be afraid to put an electrolytic cap like 100µF on the power input... it costs 10 cents...