Bob I'm glad some of my posts have helped you. Thanks for saying that. Shrimp and garlic is a killer combination with red or white sauce, especially if you are near a market and can get fresh shrimp. The bigger asian markets often carry fresh shrimp.
As far as the white sauce goes, as with most things, I make it to taste. Saute 1-3 cloves of minced garlic (or shallots or both - whatever you have) in a bit of olive oil to just soften it a bit. Add about a cup of whole milk (or heavy cream or do half and half - depends on how rich you like it). Turn the heat down to medium or less and cook it for about 30 seconds or so. Then add a heaping amount of shredded parmesan cheese stirring continuously. I take the sauce off the heat as soon as the cheese begins to melt and become incoporated with the milk. Add salt and pepper to taste and then remove from heat and allow it to cool. The sauce will thicken as it cools.
After making it a few times, you'll know how much garlic, milk, or cheese to add to get the consistency and taste you like.
Another really good pizza is white sauce, cheese, garlic chicken. This makes a garlic alfredo chicken pizza of sorts and is really good. Season chicken breast chunks with salt, pepper, and garlic powder. Saute lightly in olive oil. Don't overcook chicken breasts. Then slice it if you haven't and top pizza white sauce, sauted chicken and more garlic slivers.