Having a library of examples is going to be the first step. You can also then templatize meaning create a templet for yourself by working backwards and thinking, ok, if i were to recreate this, what would go in the first paragraph? And then you've got those pamplets to look at. That saves you time, but also leads you to create better work. It makes it more your own,. Refer to this as derivative with a twist, which is fine. A formula that's working, and then just make it novel enough so that it becomes your own.