- Place the tinned fish in an L-shape on a rimmed sheet pan to anchor the “board”. 
- Add the brie to the center of the sheet, then add the gouda and cheddar slices to the top two corners of the sheet. 
- Add the crackers to one side of the sheet. Place the pickled red onions, cornichons, and olives in separate small bowls or ramekins. Arrange the ramekins around the crackers, cheese, and tinned fish on one side of the sheet. Add a handful of the chips around the brie. 
- Fill in the open spaces on the sheet with the hard-boiled eggs, radishes, lemon wedges, and more chips.