Great to see a stock Model T. Nice build.
"And since I know absolutely nothing about these cars there are probably things that aren't correct ... So if you see something let me know so I can fix it next time."
In the spirit of your comment, I have to add this: Your wood treatment looks nice (and by the way, good job of executing the 'planked wood' appearance), but early Fords (in fact, most vehicles) did not have cleared natural wood beds or floors.
Model Ts {and Model As} had plank beds, but they were painted black ~ no wood color visible at all.
It's all-too-common to see builders of the older trucks with wood beds succumb to the temptation to crank them out with highly shellacked (or varnished, or urethane-coated) natural wood planks, often with chrome skid strips, but it's just not authentic for factory stock trucks.
Now, having said that, on customized trucks ~ it looks great!!!
Also, the Model T {and again, Model A} had plywood floorboards (cab), not planks.
The floorboard was completely within the cab and from the underside you could see the bottoms of the fenders, bottom of the cab floorboard (painted black) and the rolled bottom edge of the cab's rear sheet metal panel. The bed attached separately to the frame, and the underside of the bed planks (painted black) were visible. There was no flooring or wood between the cab and the bed.
And, as mentioned by others, there was no white or cream upholstery on a stock Model T. Black. That's it.
Wheels would have been black as well for this vintage of Model T, however, many owners "dressed up" their new Model Ts with a can of paint, a brush, and some time spent with the wheels, so your treatment of the wheels is not so far-fetched.
Radiator hoses may have been a dull dark red or black, but the goodies on the firewall were all black, in varying shades or textures of black.
Otherwise, you've built a very credible and good-looking Model T and it's very nice to see!