Hi! First time user here. I'd like to get my PCB printed by JLCPCB, but I have no idea if I did it right, and I'd like if someone more experienced checked it out. I don't expect someone to go over every single trace, but I am sure there is plenty of blatantly obvious beginner errors that I don't know about but anyone more knowledgeable will notice them right away.
I am particularly worried about the top-right corner of the PCB where the traces got a bit more dense.
https://easyeda.com/dereksp.yt/arduino-mega-flight-controller-shield-wip
Thanks :)
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
Please see especially (4) and (6) in (2) in:
https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a