In the tutorials you were taught how to do things..

Now here are some excercises you can do to see if it all worked out..

In the "You make me feel like a beauty queen" you could notice that in the end product she has lipstick on..
Try to imitate and make your beauty queen have some on..

In the Tutorials you were taught how to do some effects..
Try to discover some of your own or combining all of those into one..

In the Tutorials you were taught some shortcuts to finish works faster..
Try to do the "make me feel young again" at the shortest time possible..

In the Tutorials you were taught how to use various tools..
Try to enumerate all the tools by using the text tool and make it in a canvas.. (put some effects to attract attention)

In the internet you can find various text effect..
Try to make one of your own by making one with your name on it..

Try to find a comic strip or anything not colored and color it using the gradient tool or brush..

Try to make a rainbow by using Photoshop.. (try to apply everything you know about photoshop)

Try to make a birthday card for someone.( put design)

Try to make a Invitation card for some one.(put design)

Try to make a T-Shirt.. (Download a plain or layout of a shirt to lighten up the work)