Is the handprint of Buddha mantra important?

Personally, I think it is possible. Buddhism is all-encompassing. Don't let me create my own handprints.

Taking Buddhism as the essence, focusing on mental method and taking handprints as the form are the tools of mental method, so don't be too restrained.

But in order to prevent mistakes, we can use the formation method used by experts, the proven and effective form, and the general harmless folding form, which is correct. Besides, since it is a form, why not conquer all the laws in one way and change so many flowers in vain?

For reference only. If there is anything wrong, please criticize and correct me.