Can someone correct me my fairy tale,please?¿

The story begins with two siblings that/who (prefieren mucho "who" en inglés)  lived in a big castle with their stepmother in a big castle far from the town. After their father´s death they were cared for by their wicked stepmother, a heartless woman who just mistreated the children all the time. One day the siblings were tired of that situation and they decided to escape and stay away in the forest.
When The stepmother saw it she got(felt) really angry; at this moment/time she made/cast a charm/spell saying: when you drink the water of the river you will become like an animal and just the kiss of a true love will break the magic spell.   The wizard cast a spell that turned them into stones.

As the days passed/went by, they arrived in/came to a beautiful forest, but the siblings got/were (are felt) really tired and hungry. Suddenly the little brother saw a stream and he drank a bit of water, immediately he became like/turned into a rabbit. Both siblings hugged each other and cried about what was happening,  promising each other they would never get/be separated. Then, they found a shack and they lived there.

After several years, one day a King was hunting when unexpectedly he saw a rabbit running. Suddenly the king fell off the horse and got hurt very badly. The sister found the man and she took him to her shack, she gave (him) food and cured his wounds. While the king was recuperating he was feeling something special for the woman. During these days she and her brother took care of the king.
Finally, the King was impressed with the beauty of the girl, when he recovered he proposed marriage and she accepted .They kissed and surprisingly the rabbit recovered the human form/changed back to its human form. Happily the charm was broken and all was in peace and happiness for both siblings. Terminamos este tipo de historia con "They lived happily ever after."