Find talented musicians interested in the genre and ask them to join your band. Music roles typically necessary for a Screamo band include a drummer, a bass guitarist, lead guitarist, a vocalist and keyboard player.
Brainstorm a name with your new band members. Having a cooperative atmosphere can strengthen the bonds between the band, leading to more creative output.
Look to artists who have inspired you and discover your own sound. If you enjoy a particular guitar riff, simulate that in your own music, but more importantly, make it your own. Combine it with a unique bass or drum line, for instance.
Write lyrics appropriate to Screamo. Topics can include politics, relationship failures, and past vendettas. You should try to put together at least ten different songs before playing a live show.
Practice to improve your band's cohesion and chemistry. While practicing, try and improvise with the music. The best creativity emerges when you and the other musicians are responding to one another's music and innovating from one note to the next.
Record your first demo album with at least five songs. Send it off to major and independent record labels. Eyeball Records, Gravity Records, Ebullition Records and Solid State Records all support Screamo bands.
Seek out local venues which endorse Screamo bands, and work with the booking agents or owners of the venue to see if you can book a show. At performances, sell your demo album at a lowered price and be sure to mingle with other Screamo bands. Trade tips on what has helped each band develop.
Self-promote. Sign up for Facebook, MySpace, and Twitter accounts. Create an iTunes account with your songs. Upload your music to the web, and then work at getting a fan following.