If you're talking about the very first room, you just need to interact with the yellow text on the wall.
If you're talking about the room with the TV, you just need to interact with all four objects to continue: the gun, couch, TV and poster. ^^
Oh ok, with my screen I can barely see the yellow text on the white wall ahah
I played the rest of your game and it was really well done. Congrats ;)
