Forward one foot spin / scratch spin

i really need help with my fw one foot spin (its definitely not a scratch spin rn but entry is same) im really struggling w the entry because i krep slipping on my outside edge (im really wondering if i need to sharpen my baldes but i dont think thats the reason, its just skill issue). i just cant feel it correct. my coach says i sometimes rush into the spin, but as i said, i just cant feel it correct! i also tend to get on my toepick instead of the rocker. should i bend my knees more? how do i keep my upper body? ive been able to get the spins a few times but i cant seem to make it consisteny