Another colour

I have lots of them - these unfinished projects - waiting to be finished...
The centre is made of pieces of cotton, paper, candywraps, feathers, angelina, you name it and it's probably in there. An abaca tissue with a coloured rubbing is glued on top.

What I want to do next is to sew it and that's all (maybe). But always there will be something else to do first. Why is that?