In addition to what was already mentioned, early '35s had a radiator with a "surge tank", later models didn't have it (should have). Sometime during the model '35 run a metal plate was used as part of the floor pan under the floor pedals. It was replace by 5/8" plywood. Early deluxe '35 dash and moulding color was changed slightly to a darker shade during the model year. Early '35s have a pull rope door closer later models did not. All '35 coupes (standard and deluxe), have a roll down rear window. No so for '36.
The '36 had several mechanical changes including a change in spindles, steering ratio, wheels and helical-cut first and reverse transmission gears, engine; larger radiator capacity. Late '36s had a '37 type rear transmission mount (a big comfort improvement).
Generally, it is hard to assume that early '35s have specific characteristics not found on later '35s. Ford made a lot of "running changes" during production which often resulted in a blending of model characteristics. This is perhaps even more so on '36s. Incidentally, Ford made available a kit to dealers to "convert" left over year end '35 models into a '36 which can also blur specific model year differences.
Tom