If you think about working with a theme you will have to deal with drawings and images. Assuming that not everyone can draw as well as the next person, I wrote some lines about the
capabilities of a computer.
For changing simple graphics you can use "paint" the standard program of windows. Do you want to get more out of a photograph or drawing a better drawing package is often desirable.
A bit of software for editing photos is pricey and that we do not want.
What we do want is a free software package. One of those I am very fond of is GIMP. br> The link
will take you to the download page where you can also download a user manual.
Because software does not improove your drawing skills you might want to download some images on these pages or google for better ones. On the following pages you can find themed
topics. The Gimp logo contains a layered drawing (to my knowledge only useful in GIMP) In these you can modify text or pictures to your liking.