@Wilfred your pony is just gorgeous, what a chunk.
I’ve had two horses of my own now. My first pony Ziggy hardly ever spooked, but he did run if something scared him. I got into bad defensive habits with him. My current horse Sid, who is 15hh high and the same wide, doesn’t tend to run from th8ngs, but he will jump sideways and he will whip round. He is generally a very safe horse so I feel it’s up to me to deal with the spooks.
Ziggy responded well to being allowed to look at something that bothered him. I tried this with Sid, and it’s not a success - the more he looks, the scareder he gets. You could find out whether Wilfred gets better for looking just by walking him out in hand, or even creating a scary thing in the arena with, I don’t know, an umbrella or something. With Sid, who winds himself up, I just have to be really firm and really calm.
This means I have to sit deep, not perching - I tend to perch when I am anxious. Back straight, hipbones really connected to Sid’s back, good rein contact keeping him straight, and ask him to go forward or (if he’s spinning) stop. The stronger my seat, the more confident he feels.
it’ll be so good when you have an arena, you can work on this with Wilfred and your RI. In the meantime, I hope you clean up at your in hand show!