* What sort of current do your tracks have to carry? You may need to think about making them wider for higher currents. You can find various trace width calculators vs. current and temperature rise online. * You need to sort out the copper area:  A Copper Area has to have the same netname as the net to which it is required to be attached to. The pad it is round is not the same netname as the copper area. You also have two copper areas in that region. You probably need to delete them and draw it again from scratch. * In EasyEDA I don't think it is possible to design plating that goes over the edge of the PCB in the same way it appears to be in the Adafruit board. You can however have plated half-holes or "Castellated Holes" which you could configure to do the same job:  Or, Gold Fingers:  * By default, PCBs in EasyEDA are 2 layer. It is no cheaper and is actually more effort to make a single sided PCB than just to make best use of the default 2 layer process in EasyEDA. You get a professional quality PCB with through-plated holes, solder resist, paste masking and silkscreening. You may not care about paste masking in this particular design but it and solder masking are important for more complex and especially SMT boards. Through plated holes mean that you can track to a through hole pad on either side of the board without worrying about how to ensure you can solder the pins on the bottom (solder) side of the board. * For a bit more info about PCBs, have a look at:  [https://easyeda\.com/andyfierman/Elements\_of\_a\_simple\_PCB\-e42c7b2a4e17449f821a97d04806aeeb](https://easyeda.com/andyfierman/Elements_of_a_simple_PCB-e42c7b2a4e17449f821a97d04806aeeb) * See also (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a)

@andyfierman Thank you for all the information and tips!