sorry I don't translate recipes very well, I'm more of a guy with a knack for cooking than a formally trained Chef
for a simple bechamel(white sauce, one of the mother sauces in the culinary arts) I use about twice as much milk or cream as roux, so if I use 2cups of milk I would use about 1/2 cup of flour and 4 ounces of butter to make the roux., a little less if you're using cream which will thicken on it's own.
you can add onion and or garlic to the butter prior to adding the flour
you can also use bacon or pancetta and use that fat instead of butter which gives a wonderfully fattening flavor
, I used to make a dish that I used duck or chicken fat (mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm)
adding roasted vegetables(roasted asparagus and pancetta is great with pasta, so is roasted garlic, tomatoes, squash, you get the picture), salmon smoked or otherwise, chicken, hard cheeses such as parmesano, reggiano, asiago or stravecchio, sun-dried tomatoes. In short once you have created the basic bechamel, the sky and your imagination is the limit. anyway that's a few fairly simple, at home kind of ideas.Hope I made sense