You can add a shortcut to your Home Screen to open a specific notebook (see http://feedback.squidnotes.com/knowledgebase/articles/1179331) or to create a new note in a specific notebook (see http://feedback.squidnotes.com/knowledgebase/articles/1179328).
It does not appear to be possible to create a widget that allows for taking handwritten notes directly on the Home Screen (due to the fact that you need to be able to swipe left/right to get to different pages on your Home Screen). Please vote here if you’re interested in a widget that shows a particular note on your Home Screen (and allows you to open it quickly to edit it).Anonymous supported this idea ·Anonymous commented
Squid is my number one note taking app but sometimes I need handwritten note displayed on my homescreen to act as a reminder. For this I use a rival. Please incorporate this.