-add 50g of bark to water and 10ml of vinegar solution to acidify.
-mix thoroughly for (how long? does it matter how long?).
-let solution cool to room temp and add (10gr) lye slowly.
-mix and let it cool again.
-add heptane and swirl.
-wait for layers to form.
-put container with the solution in a warm water bath at ~50 degrees celsius for (how long? is 2 hours enough?) while swirling periodically.
-extract top layer into a separate container and freeze precipitate.
-let solvent completely evaporate
-do a few more pulls and freeze and evaporate again.

so am I missing anything? is this sufficient?
please enlighten me. thank you very much

You mostly have it besides a couple of things:

When you say 'lye to water' are you making a solution ready for adding after the acid step ? If so there is no need to add extra lye later. That solution will have cooled by the time the acidifying is finished, and can then be added, basifying everything.

If you want heat I would just add the lye directly to the acidified mix. The heat is useful whilst mixing the nonpolar solvent with the aqueous phase, and not much use when they have separated. I advise doing it at room temperate or just above for cleaner yields though. Heat just causes unnecessary crap to migrate after the solvent has already taken up it's share of spice. Precipitate these pulls for cleaner spice and do a final warm pull for the remnants, concentrating all the crude into a minimal amount instead of the majority of your potentially white spice. Just warm it up until desired temperature is reached.

When freeze precipitating the idea is you are dropping the solubility of DMT so that it crashes out and crystallizes. Evaporating the naphtha will just leave behind impurities, which is why you pour it off once you have your crystals.

The most important rule for a beginner is DISCARD NOTHING until you have done everything.

Hope this helps

Thank you for the reply. No I added that as a note so I remember to add lye to water instead of water to lye haha. So you are saying the warm water bath should be after adding lye? or do you mean after adding the non polar solvent but before the layers form? and what do you mean by precipitate these pulls?

I mean if you want to use extra heat you do it when mixing the nonpolar solvent with the basic solution, after adding lye and naphtha. Also precipitating the pulls (each batch of dmt containing naphtha) that were extracted at room temp before a final hot pull will show what a difference in temperature can make to the purity of the spice, giving you a mostly clean batch and a much smaller, less pure one.

I just re-read your initial post and wonder if you will be separating out the bark after the acidifying step after acidic boils ? Or are you just going to add base straight to it ?

It's good to understand exactly how and why these extractions work before doing it your own way, and not rely on a specific tek. But it might help to follow one at first to gain an understanding of the process, then you can improvise and predict the results confidently.