First try at a Storyboard

I've been wanting to learn how to make a storyboard FOREVER and I finally found a resource to help me do so. I still think there's got to be an easier way to do this though. As you can see, it's far from perfect... Theres a black line showing in the middle picture on the far left. I couldn't get it covered with my picture completely. I would love to make these for friends and family members and print some for the girl's rooms but I need more help with them!! If anyone has any pointers or suggestions I would really appreciate it!!!! Until then... I'll keep playing!