I did not check the pcb layout against the schematic
Avoid 90 deg. pcb trace corners. In the etching process the chemical tends to migrate into the corners and create weak spots. The more olique the trace-corner the better
Make traces as wide (especially power supply lines) as possible
The trace to the left of "R2" does not seem to connect properly with the trace out of the top of this part
Centre the end of traces to the centre of pads (still missing or not shown?)
If you would mention the layout software you are using, you would, most likely, get better help
Good start, and good luck, have fun! E