Ya'll...there is NO rule!! Don't worry about breaking anything!!
Now, lets get back to the fun!
Welcome Lizzy!
Cre8...I haven't used the Mirage, don't know what it feels like, so I can't really help you there. I did buy a stack of their batiks. I think they will work fine and I'm using them for some of the pieces (they actually work better for some of the scrolls because they are thinner), but I wouldn't use any of them for the background or borders. JMHO.