Hey Becky,
Fantastic to have you on here and posting! Great to see you come out of lurker mode
The anxiety around doing your first few missions is something EVERYONE has had to deal with as it's very much a fear of the unknown. Like you said about being challenged by someone in the store..
I haven't done 'task app' work for years now but I did it for about 2+ years and must have been challenged maybe twice in all that time. On both occasions, I just said I was taking photos for the girlfriend as she wasn't sure what she wanted me to buy etc.
Once you get into the swing of doing the tasks it's VERY easy money and far more than surveys or clicksites or any of that sort of stuff! And as always the more you do something the more normal it all becomes!
If you have any questions please do just ask on here, everyone on here just wants to help you earn the most amount of money as possible so take advantage of this extremely friendly community!!