As someone else also said on another thread, nail polish, files, products have been around for years, but people still come to the professionals. You can tell badly applied shellac, so make sure you keep up with your education, I think everyone should do a refresher course regularly as it's easy to get into bad habits. Also make sure the nails done by you, on yourself and every client look perfect.
Also, these products probably aren't made for layering, nail art etc. I have recently found out that the salons by me mainly do block colours so I have booked onto the cnd nailstyle course, I train in shellac next week, try to think ahead. There is so much you can do and if it means you need to up your game...just do it :hug: xx