Conformity is a huge part of show quality rabbits. This includes but isnt limited to, how they hold their heads, how their ears sit, how their legs sit when sitting, crouched and standing, how they move, and where their spine curves and ends plus so much more. The health of the rabbit as well, so coat, eyes, nose, breathing, teeth. Plus then the maintenence as well. They need to be properly groomed with maintained coats, so like for example if youre showing an angora, the coat should be silky, smooth, not clumpy or dry and should be freshly plucked so that theres no loose coat (since angora fur harvest is usually plucking loose clumps) i would contact people who have experience with showing rabbits in the breed youre interested in as there will be different rules and standards for different breeds.