There are very few recipes that are etched in stone. Even well known recipes like tiramisu, which has a traditional method of preparation, are subject to variations. King Solomon is credited with saying, "There is nothing new under the sun." At some point in history I suppose tiramisu was a new idea, but people have been cooking since there was fire and things to eat. I therefore declare none of my recipes to be finished.
Feel free to modify any recipe to suit your own likes and dislikes. I do. I typically credit a source, but I rarely leave a recipe untouched.
I have many cookbooks. The first time I prepare a dish I follow the recipe faithfully. Then I make adjustments. You can feel free to do the same.
The PDF recipes I include in this site have been tested repeatedly by me. Some are variations of recipes I found; some are original recipes that I created after tasting something. As an example: I once wanted to learn more about cooking with shallots. I sliced a large shallot and sautéed it, wondering where I might use the flavor. The only idea that came to mind was, "Put this stuff in the trash." But I still had a bunch of shallots. Then I got the idea to cook the sliced shallot longer, until caramelized. When I tasted it, an idea came to mind: "This would taste good with clams." I then set about to create my own recipe for linguine with clam sauce.
Not everyone can invent a dish by tasting one ingredient, but I believe it is a skill many people can develop. I think of it as "cataloging flavors in the mind." Get to know flavors. In time, you could be inventing your own original recipes too.