Yeah, im gonna go back and clean up the rivers at some point.Please excuse my unsolicited critique, but I think there is a very noticeable upscaling aftifact. All the rivers are using the diagonal directions a lot, way more so than anything inbetween. It looks like every few kilometres every river is making a 90 degrees turn, which when repeated this much looks rather jarring. This is probably caused by following the centres of upscaled pixels, instead of smoothing the line out in some way
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