A structural edit does not involve checking for punctuation, spelling or grammar as these fall within the scope of copy editing.
It does involve reading through your manuscript or document to obtain a broad overview. I then make notes about language, style, structure and flow. Upon reading the manuscript a second time, I will make more detailed notes which will form the basis of my report to you, the writer.
Notes are often made on the manuscript itself via Track Changes comment boxes, while its strengths and weaknesses are highlighted in a report to you. This report is for making suggestions for improvement, which you then can decide to carry out or not. I do not make the changes for you, but I will often provide you with an example of what your manuscript could look like with the structural changes in place. This makes it easier for you see the overall vision for your manuscript. I then collaborate with you to make these changes.
The structural edit process is not about changing your creation through the wielding of a blue or red pen, but is a positive and helpful report containing constructive feedback and improvement recommendations.