Aeroview didn't identify all of my individual field boundaries
Just like when you marked your entire farm border, you'll need to do the same with each individual field.
Click the big + sign next to 'Add/edit your fields'.
Type in your field name and specify its crop type, then click 'Draw Polygon'.
With your mouse, click on the corner of one of your fields.
Move your mouse to the next corner of that field and click to drop a point on that corner, then let go.
Click the tick next to that field's details on the field table, or click 'Save' when you're finished with that field.
Repeat this until you've ended up at the same point at which you started.
Repeat the whole process for every other field on your farm.
Once you've marked every field within your farm boundary, click 'Next' and you'll see data for your farm.