For each Inkpact scribe job you work on you'll need to use an A4 lightpad to see the Inkpact line guide through the card, this will give you the straight lines to write across while meeting the standard layout for all Inkpact cards.
You can find A4 lightpads in most retailers/online. It is an A4 size to allow you to use the A4 Line Guide and alternate between writing A6 and A5 notecards without having to rotate to landscape.
Don't forget that this can be claimed as a business expense in your tax return, for more info and support on this topic, please refer to the guidance on income and expenses from your local Tax office e.g HMRC in the UK and IRS in the United States