The mnemonic ARI BAR is a useful way of remembering all the different steps. But again the first and most important step is to:
Observe the Patient
Then preceed to check the ARI BAR questions:
Once you have done this check the length of the PR segment, QRS and QTc, you also should comment on axis (details in intermediate tutorial) and note any other features that can be seen e.g. ST elevation, T wave inversion etc.