This is the way I started also. One thing I did differently was:
1. As far as a "muddy" taste? I solved that by first taking the the extract and running it through cheese cloth, trapping the tobacco and keeping that drained liquid in a second jar. Afterwards, I returned the liquid into the original jar and let it further settle out any sediment for a couple days. I used all but the last of the remaining juice down to where the sediment was and filtered that, as stated below...No muddy taste!
2. I filtered with a french coffee press then
3. I filtered with a 5 micron filer on part of the extract
4. I filtered the rest of the extract by taking the french press liquid and filtered it by putting it through a paper coffee filter and a second time with a new paper coffee filter.
This process showed the following. the 5 micron process, naturally, showed up clearer then the paper coffee filter and gunked up less than the paper filter method. However, the paper filter method had a little more flavor in my sub ohm tank! yes it caused me to rebuild/change the coils more often, but the trade off was much more satisfying to me, at least. Hope this helps somebody.....