Usually, the building department permit application forms tell you what and how many copies of plans must be submitted. Sometimes, you can get to talk or meet with the plan examiner before making the real submission to iron out any major omissions.
It sounds like you have most of it down, although it's hard to judge without seeing the drawings if they are indeed complete. Do you have elevation views of all sides of the exterior? Include the proposed wall materials (siding, sheathing, insulation, etc.) and roofing and flashing materials on the wall sections. There should not be exposed wood framing on the wall between the garage and living space - it should be insulated and have fire-rated sheetrock on both sides. The (proposed) door between garage and living space should also be fire-resistant (metal clad or solid wood). There should be at least one step up from the garage floor slab to the living space (to keep heavier-than-air exhaust and gasoline vapors from entering).
Make sure the grading outside of the proposed garage works so you don't wind up with water ponding against the foundation walls (or slab if no basement). I don't know what types of soil conditions are characteristic of that area, so you should be careful of any difficult conditions (clays, groundwater, etc.) that require more than a simple footing below the frost line.
In some places, the plans must be stamped by a registered architect "RA" or licensed professional engineer "PE". Check with the department on this.