What is Wrong with this PCB I Designed for a Line Following HOGbot?

Situation

I’m building a line following robot using the HOG drive. This is the first time I make my own PCB and I’m probably doing it all wrong. Years of making robots and I’ve managed to avoid this gruesome task until now. Can you tell me what I’m doing wrong?

The PCB

This PCB is supposed to receive 5v0.3a and send a modulated 5v signal through the orange lines to an Arduino. The modulation is based on the amount of reflected IR light emitted by the IR LEDs in each of the QRD1114 sensors. The resistors are supposed to keep everything playing nicely together.

Here are pictures of the front and back.

Symptoms

When I plug it in the outer two LEDs light up (I can see it on my iPhone 5) dimly. The sensors return nothing but HIGH (5v) all the time.