If you develop yourself, the best thing you can do is to start with a small part, a single learning object, as well. Have the learning object tested by an individual or a group. Adjust and then proceed to other learning objects.
Compatibility and updates are of course equally important when you develop yourself. You can find more information later in this module, namely about the criteria that may determine your choice.
Also consider the reusability: Develop educational materials in small, autonomous units that do not contain explicit references to each other. You can then, based on these small learning objects, develop larger assemblages or learning paths for different target groups.