HI! I just joined and glad to be here!

I feel as I am in need of advice in creating a realistic (proportional) world map and came across this forum in search of advice

I am about to start my second world map but I feel my first world map was not good enough nor proportionally accurate nor detailed enough. Is there any tricks or advice in creating a outlined world map on a large piece of paper/ watercolour paper?

Any advice would be great!

PS. My last map was created using paintbrush, watercolour, ink, acrylic and 17th century map reference.