I think I am going to have to give up on this course, because I can't make those types of jumps, off the backs of enemies, over that first huge gap... even WITHOUT holding a shell... c__c;
yeah it took some practice for me to get the jumps consistently, it is possible. Part of what I can recommend is on the block snake you can kick the shell upwards to get rid of some of the goombas, because those'll be a giant nuisance otherwise
Honestly, I'm okay with that. It's doable with enough practice rather than being trolly or kaizo level difficulty, which means I created at least a semi-balanced level
if I ever leave Fire Emblem Heaven or Hell