For a richer flavor, consider adding a pinch of red pepper flakes along with the smoked paprika. If you prefer a sweeter note, a touch of maple syrup or brown sugar can be added along with the lemon juice. Collard greens can be slightly bitter. Blanching them in boiling water for 2 minutes before sautéing can help reduce the bitterness. Smoked paprika comes in different strengths; adjust the amount to your preference.