Im working on a purpose-built Arduino knockoff, and Ive finished my schematic and PCB. Could you please look it over, and let me know if you see any obvious errors? Also, if you have any tips or constructive criticism for schem capture or PCB layout that I could (might?) benefit from, feel free! Please keep in mind that I will be etching this board myself, so Id like to keep the number of top traces to a minimum. Since most components sit flush with the board, its hard to solder to a top-side trace under a component. Also, any vias I use need to have a wire put through the hole, and soldered to the top and bottom, so Im trying to cut back on those aswell.