Making a practice/training plan
1. Think through players age and skill and what 1-2 things you'd like to focus on during that session. Try to design/modify the drill to challenge players at all skill levels.
2. Have a running list of additional "things" to inject if you have time or a planned activity doesn't work well (maybe throw-ins or corner kicks).
3. Factor in water breaks and progressions of one drill to another.
4. Use some sort of written template.

Coach Training

Soccer Drills and Practices Volume 2801

This book is designed with drills for soccer players in mind. We go through the drills and show you how to do them (with diagrams if necessary), and what the end result might be for your players. Many of the drills will try to combine the skills of each of the areas with elements of the game that they need to try and improve. Some of the drills will be for each individual skilled position. You can review the full volume here: Soccer Drills and Practice Plans Volume 2801