Arduino Mega 2560 board + 1802 PCB design completed

JUst completed Mega 2650 board shield with 1802 on it. Used EasyEDA and sent design to JLPCB.
Here's Schematic:

and here's the planned finished product.

and here's the PCB top side:

and here's the underside:

and all from this breadboard "design" 

The most recent arduino file that worked OK,I think, is:

C:\Users\Dell\Documents\Arduino\PB_Sketches_May20\CDP1802f03\CDP1802f03.ino

Which is in pastebin here: https://pastebin.com/xHTkrFR3

While waiting for PCB's to arrive, will plan two Nano version of Cosmacuino.