Gently spread a light layer of cooked rice over entire sheet. At one inch from the edge of the seaweed sheet, place one cucumber slice with the green skin facing the rice. Slice a separate sheet of seaweed to fit directly over cucumber slice. Once seaweed slice is arranged, place a second slice of cucumber on top. Starting from the edge, gently fold seaweed sheet over, lightly pressing to form a roll.
Slice roll into one inch pieces.
Gently spread a light layer of cream cheese over entire sheet. At one inch from the edge of the seaweed sheet, arrange shrimp to cover a one inch rectangle section of the sheet. Brush shrimp lightly with lemon juice. Starting from the edge closest to the shrimp, gently fold seaweed sheet over shrimp, lightly pressing to form a roll. Slice roll into one inch pieces.