Oh heck, don't worry about the leadrope thingy. It's a minor thing, good for a chuckle, if you ask me. Silly horse, he shouldn't panic over stepping on his lead rope. He needs to step on it MORE not less. Let him work it out and get over himself. Just say to yourself , "oh cut it out! Get a life, you silly lil bugger!"
then go get him and start again.
Same with the spooking. He's being silly and needs to get over it. Say to yourself , "this is so boring". (this helps when your mind is feeling just the opposite, wanting to make a big deal out of something).
You'll look back on these incidents and laugh, in a few months. I bet you'll be twice the rider you are now, in a year!