I think I'm naturally creating great music in my head and I've learned some things about music theory to start making music in the real, physical world.  I'm starting off with simple, short tunes that I think others would love and find catchy.  

I think such tunes are good enough for now because there are simple, short tunes out there that are great and catchy.  Haven't you ever heard of one?  I'm quite sure you have.  An example would be the Frosted Flakes tune which has the lyrics:  "Frosted Flakes are more than good.  They're great!"  

I think I'm creating simple, great tunes like this.  Another example of a simple, great tune would be a tune you'd hear when a character in a video game acquires a 1-up (extra life).  I've created my own video game tune.  It's not the type of tune that would play when a character earns an extra life.  

It's one of those chorus tunes like the Frosted Flakes tune.  My tune would be for the video game Sonic the Hedgehog.  It could very well be a tune used for a Sonic commercial.  It would be used for a commercial featuring Super Sonic (which is Sonic in his golden form).  It has the lyrics:  "This is Super Sonic.  He's at the speed of light!"    
 
Here's the Soundcloud link to my tune:
 
https://soundcloud.com/user-432115982/supersonictune
 
Here's the Youtube link to it (in case the Soundcloud link doesn't work for you):
 
https://youtu.be/ApxaplL90p0
 
Lastly, here's the link to the music sheet of this tune:
 
https://ibb.co/my4C7ST