The standard pat DIY answer applies: "Yes and no..."
DIY creation is about 95% flavor; and 5% "texture." Cooking is more balanced.
DIY is mostly about finding the concentrate that provides the most appropriate flavoring
effect. Sometimes it is a simple 1:1 "I want a strawberry taste; so I use Brand X-Strawberry." But, other times, the flavor doesn't exist (like straight/plain cream cheese); or it is modified (like a "browned" butter vs. melted butter; or plain sugar vs. caramelized sugar). So I may need to go to some different flavor that provides the flavoring
effect (or specific
notes; as DIY often refer).
If you are going to use cooking experience, to influence the creation of a DIY recipe, it is helpful to analyze what purpose the food ingredient is used for in that particular food recipe (depending on the recipe; it may be more than one). Is it adding specific flavor notes? If so; what are they? Is it acting as a binder, thickener, filler? Most likely won't be needed in the DIY creation. Is there a textural contribution? Textures like "thick, creamy, moist, juicy, dry, and fluffy" are all realistically doable in DIY; textures like "grainy, crispy, crunchy, and flaky" not so much.
Sometime choosing the "best" DIY ingredient for one flavor note will also provide additional wanted (or unwanted) flavor notes. I may want to use INW-Creme Brulee for the correct caramelized sugar note, but I may/may not want the vanilla note that comes along with it. Depending on what I want my DIY creation to be; I may need to leave out a separate vanilla note; or use a different concentrate all together.
A good example of this "from scratch" development can be seen in the ECF
thread:
Milk Tart (South African version). I found the evolution of this DIY recipe by collaboration, based completely on a food recipe, and the discussion on ingredient choice/selection, to be very educational.