I need serious help with completing a song through a riff.I have 3-4 seperate riffs and their side ideas written but i cant make them into a song.I just cant find THE riff to continue without crushing down the feel of the section.Note that all these riffs sound like they dont wanna change,i can just put it on loop easily but never ever add anything new.
Some times a random change in idea/sound/riff/style is a good thing. But that's coming from a guy in a band who thrive on random shifts.

That being said, maybe have a think about theory. Something going wonky in terms of theory, might be the reason these riff don't gel.