I'm now a few days into PCB designing, so forgive me the probably very green question..
So, I have a number of pin headers. Up to now I've lead all traces that came in on the bottom through a VIA next to the header (left in image below) until I notices that KiCad also lets me connected them from the bottom. I guess this is allowed and will work fine, but just to be sure, let me check here.. See image.
Also, besides that it may (or not work), is there any convention or best practice?