I haven't done shopping guide, but I have done sales, medicine and excavators. It is important for sales to say that if you do more, you will be on your way, and it will take a long time to do this. Shopping guide needs more professional knowledge, at least you have to know more than your customers, and you can learn to do it quickly. I think your conditions are ok. Are you a woman? Girls can also be shopping guides, while men still have to find another job. That's all I understand. I hope I can help you.