I have a question, IDK about everyone else but when ever I make my own buttercream icing using the recipe I got from my Wilton class. My family members keep saying that it is too sweet. Has anyone had this experience, if so what have you done differently?

It's all personal taste but since you are just starting out, I would try different recipes until you find one that you like. There are SO many buttercream recipes on this site and many of them are crusting (what you need for class). Just remember no matter what recipe you end up with, there will always be someone who doesn't care for it! Just go with the majority! Good luck!

I also use Wilton's recipe for buttercream, but I use all butter instead of butter and shortening. I always get compliments on it and usually people tell me they like it because its not overly sweet. So, maybe using all butter would make a difference for you? Good luck!

You might also try different brands of ingredients. I didn't care for the Wilton recipe either. But I switched to Publix brand shortening and Bakers chocolate for my chocolate additive instead of powder. MUCH better!
Oh, and if you're not adding your pinch of salt, try that. I didn't think it'd make a difference, but surprisingly it can. Good luck!