1) Engineer station catchment area to encompass multiple industries. Here two coal mines and two iron mines are covered by one station.
2) Double the above. Build a second station as above. Two stations picking up from an industry means you can get 100% of the output not just 83%. (as said above in this trhead). Encourages production increases.
3) Elevate the platform. To create a down ramp because your trains will need it...
4) Long trains. These particular powerful locos could take another 10 or more coal wagons. They have a flat route and are new with a high %reliability so not expecting many breakdowns.
5) Ensure your trains fit right into the platform. A little tiny bit sticking out will slow down load/unload and worse my stick into the junction behind blocking it for other lines.
6) Correctly signal the layout using the single and double signals as shown in the great tutorial somewhere in these pages. In particular single signal prior to the junction and double signals on the junction exit tracks to (illogically) force a train to make the best choice.
7) Read forum posts and look at how other players play the game.