Learn Dutch: Voor deze vorm heb je geduld nodig. - For this shape you need patience.

Because the sentence starts with the phrase Voor deze vorm (For this shape). In Dutch, when you put anything other than the subject in the first position, the subject and verb swap places. This is called inversion.

Why are heb and nodig separated from each other?

The Dutch expression for "to need" is nodig hebben. It acts like a separable verb in a main clause: the conjugated verb (heb) takes the second position, and nodig gets pushed all the way to the end of the sentence.

Could I start the sentence with Je instead?

Yes, you can say Je hebt geduld nodig voor deze vorm. When you start with the subject Je, there is no inversion. Putting Voor deze vorm at the beginning just puts a bit more emphasis on the shape.

Why do we use deze instead of dit for "this"?

The word vorm is a de-word (de vorm). For de-words, "this" translates to deze, and for het-words it translates to dit.