Each of the planetary sections has templates on their websites on which you can draw the features and record other important details. The Saturn section has a series of templates depending on the angle of the rings (which you can look up in the Handbook). See: https://britastro.org/section_information_/saturn-uranus-and-neptune-section-overview/observing-programme/saturn-uranus-and-neptune-visual-report-forms
Regarding phases,in the case of Venus the observed phase generally differs slightly from the calculated one, a phenomenon called the phase effect: https://britastro.org/2016/the-phases-of-venus. So the phase should be drawn in at the eyepiece. The time of dichotomy can be determined from your observations and compared to the predicted time.
It seems that the links to Uranus and Neptune observing forms are dead.
The negative Saturn tilt forms link to the positive forms, but I suppose they are identical?