Hello everyone. I admit, this also is advertisement:)
Job for persons who can draw in Photoshop and similar programs. It relates to design of prints for T-shirts.
Referal link: http://tee.pub/lic/dVqaL-7-s48
System function in a way that you create design, upload it, tag it with multiple tags in order to easier finding in search bar. Customer select design, buy T-shirt or other item, than Teepublic do the rest of the job (print it, ship it to customer, collect money, etc.). You get 4$ for T-shirt on regular sales or 2$ on discount sale on your paypal account.
You don't need to advertise it, design belongs to you and you can sell it on other sites at the same time.
Attractive design is equal to better sales and more money. Textual designs are also profitable but not as much as more complexed drawings. The money will not come if you have only few items, it is necessary to upload a few dozens of designs and give it some time to get noticed. For example, I'm beginner and my designs are simple and crude, but I made sales.
TeePublic is good choice for beginners, they accepts almost all kind of designs (texts, cute drawings, jokes, parody and especially funart and fanfiction).
Program on which you draw your design is matter of your choice. You just need to follow guidelines (resolution, transparent background, etc.)
https://www.teepublic.com/guides/designing-for-dtg
I hope you like it :)