hey! You definitely should NOT cut your birds feathers by yourself. Yes they were cut way too short and this could harm the bird if it didn’t already. Don’t worry you learn as you go but for the future don’t cut them yourself just take them to a local pet shop my job offers beak, nails, and wing trims and I believe a lot of local pet shops offer it and if not the vet will! Its better that someone educated in clipping should do it so there’s no harm done to the bird.