Giving "overview of the rest of the paper" that points out what will be happening in future sections is quite common in academic literature - there are better w

Giving "overview of the rest of the paper" that points out what will be happening in future sections is quite common in academic literature - there are better ways to phrase it (and many people writing academic papers, myself included, try to word it so that it does not sound that silly), but this wording (even if grammatically quite clumsy) sounds pretty standard to me - I would not overthink it as a "lack of confidence".