Thank you!
The Shapes can take a bit of getting used to, but they're an integral part of the game! Have you tried lowering the difficulty? Also, different Witches have different Heartpowers. Vuu has stars, Rose has boxing gloves. You might like one more than the other.
I do want to rebalance some of these fights eventually as well as make it so Shapes have less HP at lower difficulties, but I promise it's doable even in the current version ^^