I've fallen off a few times recently after fitting clipless pedals, some times around people, sometimes alone. Getting back on, even just for a short spin helps your legs and balance remember what they are supposed to do. I felt decidedly wobbly the first time I tried out my new lighter bike and it took a few rides to feel safe, but I LOVE it now.
I've only just put my saddle up to a 'proper' position, it does help your confidence to know you can put your feet down
Ps. Even though you CAN touch your feet down, don't use your shoes as brakes and wear them out or you'll have your mum to answer to