I know very little about conformation and structure. VERY little.
However, read from the standard Tulsa fits for the most part. She's a touch tall, but not out of standard, for a bitch and a little long. Her tail set is low and her tail is also a little long. Her front is a touch splayed, but that is improving with age/conditioning. Oh and I refuse to make her look like a bus.
Harlow looks BYB type, but I actually really like how she is put together. I think she may do decent in the UKC ring and am considering showing her in the altered class. I think her slightly roached topline and skinny front are really the only downfalls I see out of her structure.
Iggy... I feel like I would have needed to know him a lot younger and in better condition to truly evaluate. He's a touch butthigh, which is ok in the breed apparently. He could use more angle in the rear, IMO, but his front is BEAUTIFUL. Like, seriously. Our only dog with a nice front. He's got a nice head/neck assembly. But, he's too big for standard. Though I've never sticked him, I think he's about an inch too tall and he's about 6# in decent shape over in weight. I'm on the fence if futurechessiepuppy will be a dual dog as I'd love to play around in the confo ring.
As far as temperament, I think everybody matches up pretty darned well, except that Tulsa is a touch soft and I haven't had her on the herding field. Her dad is actually coming along super nice on stock and they are similar in temperament, so she may actually do decent with a small herd in the future unlike I've thought in the past.