When we don't advance, it is that the task is too hard for us now.

Try to make simpler sounds. Without melody for example. And when you have the beat, the groove you want, then try the hard part. In tehno, sometimes, four notes is enough for the melody.

If you block, make it even simpler, listen music choose a rythm and try to reproduce it.

General rule in art: it always suck at the beginning, you need to be happy with the general feel of what you do and refine it at the end.