Despite your poetic, gentlemanly reputation, you can be a ruthless and unmerciful king. You execute Murdoch, 2nd Duke of Albany and his two sons in front of Stirling Castle then usurp and claim their earldoms. This settles your grudges and brings you a significant amount of income. Your queen will be pleased now there are more funds for her expensive tastes.
The example you hoped the execution would set has unfortunately backfired. You get the reputation of a callous, unrelenting monarch. Many nobles now distrust you.
You import luxuries from Europe to furnish your court and satisfy your expensive tastes. An advisor informs you that many peers are growing more and more disillusioned with your vision of good leadership.
Don't listen to them, and have that advisor hung! You are succeeding in your mission to gain wealth and power. Who cares how you got there?! Making history doesn't always mean doing the right thing. These are difficult times, a monarch must be ruthless.