Quote Originally Posted by Bwian
3) PLAN. Plane your mod well. Work out your factions, units and so forth. There is a limit to the number of units you can have, and a degree of planning is needed to make sure there is room for what you want.
Good point. Also it's worth making a work plan to estimate how long you'll spend on the project. I think a lot of people underestimate just how much work is involved. For example, it's worth working out, how many units you produce a week divided by the total number you'll need for the mod (very simplified). Are you still going to be motivated by your project in 10 months time?