This is very true, Krysta. Please do not destroy your work! Your artwork is amazing! Consider it good practice, never intended to be sold, and it is fine. You aren't breaking any rules by doing just as Val said. Hang them on your walls so you and your family can enjoy the paintings. You still did hard work on them, and learned so much while doing them. I don't know about you, but every painting I paint I always learn something new.
Please don't destroy your work. Let it beautify your home rather than rot in a landfill or smolder in a fire. That would be such a waste of wonderful, hardearned practise and work. The only thing you can't do is sell the work or display it on your website.
It is like painting replicas of Master's work. so many artists do it to learn the techniques that artist long before them used. They just can't sell it as their own work. As long as they specify that it is a replica of so-and-so's original work, then they are fine.