how do i kill ursala

help i am on sora i can't get farther

Very easy battle, for this one you will just need to take your
keyblade cards with value 7, 8, 9 and 0 (two will be enough)and some
healing cards. As soon as the battle starts, attack one of the two
central tentacles until it goes down. Then, start jumping and hitting the
head 3 consecutive times (NOT USING A COMBO!) or more, if you have the
time for it before the tentacle going up. Then keep on repeating for some
time, until Ursula seems to move left (or right) and appear with the
trident. Then, wait until she makes a weird noise and seems to send some
rays at you, which you should stop by using your cards with value 0. Then,
attack her tentacles and head again until you win. Also, be sure to avoid
the bubbles that sometimes she uses, they don't cause much damage but they
can get Sora confused, which isn't a very good idea, as you will have an
harder time with your controls... If you find a Mickey Card use it right
away, as it will send the tentacles away and lower Ursula's head for some
time, giving you the chance to land some good blows.