Nice, crisp paintjob from what I can tell.
I'm a little split on the custom itself, though. I like the general idea of another "beastman". Does "Ursor" mean to imply a bear? If so, Grizzlor was the best choice, I'd say. He could do with a more "furry" torso, though - if you can find a cheap Carnivus, I would try him out, the colours match quite well.
While I do like the paintjob on the jetpack, I don't see it as a fitting "wardrobe" for a bear-based character... I would imagine something like the Dragon Blaster armour with a chain on both cuffs would fit the idea.
I also find the He-Man-do a little out of place. To be fair though, I can't think of a more suitable headdress from the top of my head. Maybe try something with a hood? Dittztroyer, perhaps? Would also fill the "blue"-requirement.
Please don't take this as being overly critical, I just think there is even more in that nice basic idea that you could get out of it.
I still just can't get my head around how absurdly CRISP that paintjob appears, though. All the more since it's yellow! Kudos for that! Did you use acrylics and a brush or what else did you use? I really need to know!