Electronic – arduino – ATmega328P development board not working

I've made a development board for ATmega328P like Arduino Uno.

Fig. 1 – schematic

Fig. 2 – bottom layer

Fig. 3 – top layer

I am able to upload the code using FTDI chip (I've used the chip which has boot loader in it). However the code is not working; I mean the LED connected to pin 14 is not blinking.

When I check the supply voltage at pin 7 I get 4.9 V, but when I check the same at GPIO it is giving 0.3 V.

I'm new to PCB designing. Please let me know what could have gone wrong.

void setup() {
   pinMode(14, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
    digitalWrite(14, HIGH);   // turn the LED on (HIGH is the voltage level)
    delay(1000);              // wait for a second
    digitalWrite(14, LOW);    // turn the LED off by making the voltage LOW
    delay(1000);              // wait for a second
}