[Review Request] LED dimming with MOSFET

This circuit should dim all the LEDs using a PWM GPIO from a Raspberry Pi. The 5V power for the LEDs is coming from a regulated output of a Lithium battery pack.

I made V1 already without the MOSFET and it works great, but the LED's are too bright for use at nighttime.

This is V2 of my first ever PCB. I'd appreciate any feedback or advice.