Well, not always. I see a lot of "almost right" entries in the model jumper ring. The basic idea is there, but the little details--those things that really sell the set up--are just a bit off. Often the jump is much too big. Anything is possible I suppose, but I'd rather not see your Arabian galloping down to an Olympic sized oxer. There are lots and lots of jumper divisions to choose from and most models are going to look better doing something other than Grand Prix.
Another common problem is using a horse that is not really in a jumper frame. Jumpers may gallop fast--particularly in the jump off--but they also need to collect and turn. Horses in a really long, low frame aren't going to look right. The Breyer show jumper (Ideal) is nearly perfect. Smarty Jones and Cigar are not.
Here are some pictures of a pinto pony competing successfully in the jump off of a Children's/Amateur jumping class at the High Prairie Spring Preview II Show last week. Note the size of the fences in proportion to the pony (I would guess he was somewhere between 14 and 15 hands) and the frame he's travelling in. He's definitely moving forward with speed, but he's not full out. His head is up and both he and his rider are focused on the upcoming jumps.
The pony looks unhappy here, but it was only a momentary issue.
Turning in midair to save time.
They landed long and strung out and overshot their turn. The rider compensated by sitting down and pulling hard to the left.
This got the pony turned around but also resulted in a loss of momentum.
He's moving forward now, but you can see that he's strung out again.
This resulted in a long, flat jump. Still, he was able to leave the rails up and scored a fast clear round.
This is a nice pony. Even after galloping around like a bat out of hell, he quickly settled down to an easy canter...
and walked quietly out of the ring.





And the other side:

In addition to paintwork, Tiffany turned his ears back and made him into a stallion.
I'll be showing him at the Devilish 
This is Austin. He was born Friday and it was his fault that I did not get to ride that day.


The stable did not have any children's saddles, so both kids were riding without the benefit of stirrups. Luckily, the horses were quiet and surprisingly responsive. After a few minutes, both boys forgot that they had ever needed stirrups.
We had booked a two hour ride and that was long enough to cover a lot of different terrain. We crossed a road,
rode through lots of greenery,
went up and down "horse stairs",
weaved our way through some big rocks,
and crossed a little bit of water.
We shared the trail with hikers and quite a few mountain bikers.
We also crossed paths with a couple other groups of riders. Ryan's horse Ed decided he wanted to join this group, and it took some work to get him straightened out.
Finally, we headed up the mountain.
This picture shows the boys and our guide resting near the top.
The views were incredible.
I like this view even better, though!
I could have stayed up there all day, but eventually we did have to head back down.
My new favorite 

Here's another horse with a hunter type bridle--in this case it's the draw reins (and the too long to braid mane) that give him away.
Unlike the previous two horses, everything about this grey horse's bridle screams
This cute little paint is wearing a bridle with fleece covered
Here's another full blown jumper style bridle. Note the
Lastly, here's a jumper in a English type 
Today was day two of the High Prairie Spring Preview II Show. This is a big multi day Hunter/Jumper show with lots of good things to watch. I started at the main hunter ring,
moved over to the hunter schooling ring,
then made my way over to the big jumper field,
I took about a million photos--such fun!
This was an awfully good Plan B and made up nicely for today's missed riding
Tomorrow, however, is my family's make up Mothers Day trail ride, and the third time had better be a charm. Playing horse show photographer was fine for today, but I really do want to ride a horse before the week is through!