I would like to ask what forum members can suggest to me, is it any non-paid, fast method to gain more revenue?
I'm expecting some major responses.
Don't know if this applies as a major response, but you should consider learning about digital marketing this would guide you in building interaction with people who could eventually turn to customers:
• Read about what platforms are best for promoting your project, do not be limited to just Twitter,
• Create a compelling funnel like profile, which would draw readers of your posts in and maybe turn them to be part of your community,
• Interact: this is very important. To connect with people (relevant to that field) you have to interact with them, involves liking, commenting, private messaging etc
NOTE: do not spam
• Be consistent with your engagements,
• Provide value beyond your art, there are a thousand and one arts out there, try to stand out with other helpful content,
• Remain consistent,
• Constantly read and learn about building an online presence.
Alternatively, you could always hire a social media manager.