Just get over it you are there for your job focus on yourself and what you're doing because at the end of the day they would be doing their own thing.
The supporting details should be included in the Body Paragraphs of an essay. The introduction is an introduction of what you plan to write about, and the thesis is included in the introduction where you specifically mention your main topics/points. However you elaborate on these in the body paragraphs and these elaborations are your supporting details. The conclusion is a summary of your essay and should not be introducing any new information.
The punctuation is fine. Don’t capitalize the word example though
