super basic question from newbie

[Cindy]

Everyone here seems so advanced and so do the tutorials that I need more help in getting started. My project is to design license plate frames (holders) to sell on CafePress. I am trying to make money for Bullmastiff rescue. As you know the economy has caused many people to dump their dogs. My two rescue bullmastiffs...one a puppy mill mother and the other found running on streets in Dallas...needed a lot of medical care. Big dogs are expensive to care for.

 

Now to the help I need. All I want to do is put words in color on a plain color background on the top and bottom of the frame and then it will be uploaded to CafePress.  I know it seems simple but I'm 68 and not at all good at computer art. Can anyone help?

 

 

[Ego Eram Reputo]

Does CafePress have a size requirement or a template they ask you to use?  I ask because a number plate is a really specific shape.  Your image will need to be sized accordingly.