Any graphics proggy can make a wallpaper...or allow you to do so.
None will make a GOOD wallpaper image on its own. All need practice, skill, competence.
That's ALL will need such, 'all' as in every one of them....
Some [not all] photographs can and do make good images suitable [popular] for wall use.
Find the best/affordable graphics proggy you can...and practise, practise, practise....
Boredom is NEVER a source of inspiration.
That is RULE #1
Almost invariably the poorest submissions to the wallpaper gallery have the description...."I wuz bored".
The next-worst...."I just got me the Photoshop program and...."
Jafo should make a list for...
101 excuses and other self-deprecations...