Having a Terrible Time.....

I bought some Artist's Loft water-based markers hoping to learn how to use them.  So far everything I have tried to color with them looks like a kindergartener did it.  Could someone direct me to a blog or tutorial that may help me?  I don't know if the problem is with me or the markers, but it's probably me.  I've never been artistic.  Any suggestions would be greatly appreciated.

Thanks,
Reny