First, shred your washed and dried lettuce and either arrange in separate bowls or in one big bowl, which looks nicer I think.
Make your sauce - simply mix it all together with a wee spoon. (This makes quite a bit, but we had plenty of bread and also some cold leftover new potatoes to enjoy with it, so none was left over.)
Spoon a few tablespoons of sauce onto lettuce. Then tip prawns on. A little more sauce to drizzle on top and a pinch more (careful) paprika. Don't drown the whole thing in all the sauce - serve the rest at the table!
That's it, love. You're done.