I will talk about incorporating  local composite operators in the twistor-space description of N=4 Super Yang-Mills theory. In this formulation, the interactions of the elementary fields are reorganized into infinitely many interaction vertices and I will show that the same holds for composite operators. This will be demonstrated using the concrete example of an operator consisting of two identical scalars. I propose its expression in twistor space and probe this by computing its tree-level MHV form factors. In the second half, I will say some words about how this can be extended to include the rest of the field content as well. Furthermore, I will sketch how these expressions can be obtained from a Wilson loop, which straightforwardly generates all tree-level MHV form factors for all operators. Finally I will explain how this framework can be used to compute NMHV form factors, discuss the results so far and the current problems.