One of the things I noticed in the Pentacles is the dark blue of the skies... something heavy in the air... but they all have a bit of sunlight showing on the horizon. So the mood is blue or overcast. The landscapes are late winter, spring hasn't quite popped out yet, so there is a lot going on beneath the surface... things you don't see, but can feel.
This guy is a hunk... sometimes he looks like a bit of a coward, peeking over the top of his shield, but I think he is cautious, assessing and measuring the threat before prodding the horse into action or even backing off entirely. This prince doesn't have the armor and defenses that the others do, his head is ungaurded... what you see is what you get, so he is senstive and could be hurt easily as well. Look how vulnerable his bare shoulder is... and sexy too, makes me want to plant a kiss in the hollow of his collar bone. He's well dressed, so is a man of mean's, his horse blanket is green and fringed, which makes me think he's on the fringes of prosperity... good family of means and connections. Those red leather dangly things are to deflect sword blows and protect his legs and "family jewels" and almost appear to look like "coming with bells on".
His stand is on solid ground, he deals in hard facts, but reserves taking action until he is certain which way to proceed. In one way, it does seem that he is leaning back a bit, listening, taking stock... in another way, it is in calm reassurance... but readiness to tap the sword and prod the horse into movement.
The horse to me has planted it's feet firmly, stubbornly and is going nowhere without a clear signal to go ahead and seems to be suspicious and dubious about what lies before it. But that being said, his haunches are bunched, like he's more than ready to charge forward a moments notice. His eyes are narrowed, his ears back... a clear sign that he won't allow or put up with anything... don't mess with me, I'll stomp you and may not want to be held back by this Prince, or on the opposite extreme... I don't like this, I want out of here, don't make me go here. There is a bit of conflict... the Prince is in total control of his horse tho'... don't move one way or another, until I say so. Timing is everything, proper planning and assessment critical to taking action, keeping perceptions grounded, definately not charging in when unprepared. It could also be making a stand and not being moved from it.