I've come up with this deliciously wicked character I would like to use as the 1st person POV in a novel length work. When working with dark characters in the past I have used other characters as POV to create and sustain reader interest and sympathy. But with this new character I'd really like the read to be experienced through the bad guy's eyes. I'm thinking of a work inspired by personas like Shakespeare's Richard III, Francis Uhruquat from Michael Dobb's 'House of Cards', or the Vicomte de Valmont of de Laclos's 'dangerous Liaisons'. They are wicked guys but not necessarily dark and serious, which I think makes them appealing. My goal is to have the reader want the wicked character to ultimately fail but enjoy the experience of being with him through the tale. So, I'm looking for any advice you guys might give such as things I should be weary of or strategies you might suggest.

Here's my brief plan: Fantasy world setting. All magic is horded by an ageless sorceress considered a goddess-queen. Every century or so she appoints a new prince to run things while she lives in luxury on a island far out to sea. Our character the wicked prince has discovered it's his turn to be replaced. The queen's magic that kept him ageless for two hundred years will be revoked leaving him to age quickly and die. But he has been planning for this event for a long time. He has set up an intricate scheme to ensure his eternal presence as wicked prince. he does not want to usurp the queen, he just wants to remain as prince. But his passion to remain as Prince is such that he will be ruthless in his quest for survival.
I'd love to get your input. Thanks, ram.