I don’t have Topaz. To get a blurry effect, I did these things once I was done coloring:
- select all -> copy merged -> paste
- set that layer to soft light, apply a gaussian blur of 20, and desaturate
- select all -> copy merged again -> paste
- go to filter -> noise -> reduce noise
I don’t remember my exact settings, but I didn’t use a strength of more than a 5, and I increased my “preserve details” and “sharpen” options.