One way to "test drive" a tattoo is to edit a photograph of yourself to see what it'd look like on you. This is also a good way to freak out someone who doesn't want you to get a tattoo. Send them a picture you made with these instructions--they'll think it's real!
Step 1
Open Photoshop Element 7.
Step 2

Go to open -> file and open the image you will be pasting the tattoo onto.
Step 3

Go to open -> file and open the image you will be using as the tattoo.
Step 4

Go to select at the top of your screen and select all then copy (Ctrl C).
Step 5

Go to the bottom of your screen and double click on your background image (the picture you will paste the tattoo onto).
Step 6

Paste (Ctrl V) the tattoo onto the image.
Step 7

Go to your grab tool and click on the arrow. This will automatically select the image you have pasted and from there, fit the image to the part you'd like to paste it to.
Step 8
Go to the right side of the screen and where it says 'normal' click and select 'multiply'.