First pass at laying out the PCB: Appreciate some destructive criticism

[Piotr]

@onemanonelaptop

So…If its a 4 layer board with 2 ground planes, where would the power go?

For years I used to design 2 layer boards with whole bottom destined to one continuous GND zone. So all signal and power lines were at top. From time to time I had to use some 0Rs.
Here is the example how it looks practically (all vias are GND):

Approaching PCB track routing for a newbie

Positioning for me is the main work in designing PCB. If each element is where it is needed than routing is simple. Till now all my PCBs are 2 layers and all of them have GND plane taking 100% of bottom layer. So except GND I design my PCBs as 1 layer. I use microcontrollers in QFP packages without thermal pad at bottom. This allows me to go with VCC under the microcontroller and go out through all corners and all VCC pins. That way GND and VCC don’t disturb my signal connections. At all digi…

Now when I started to design 4 layer boards I have In1 and In2 GND, signals at top and VCC at bottom (I have only VCC and GND vias). But my designs (as you can see in the above example) are simpler to be routed than yours. But even with your circuit there probably will be no problem to route signals and power having 2 layers for it.