updates from cheryl; redo walkthrough image

Author: peverwhee

docs/conversion/back-to-cam.md

@@ -40,7 +40,8 @@ cprnc <file1> <file2>
 
 - Open a PR in [ESCOMP/atmospheric_physics](https://github.com/ESCOMP/atmospheric_physics) for your parameterization and any interstitial code (including diagnostics) using the code in your sandbox
     - Make sure you include a ChangeLog and NamesNotInDictionary.txt file as specified [here](https://github.com/ESCOMP/atmospheric_physics/wiki/Development-workflow#changelog-and-namesnotindictionarytxt)
-- Open a PR in [ESCOMP/CAM](https://github.com/ESCOMP/CAM) for your changes in CAM (if calling lists changed) or it may as simple as a PR to update the atmospheric_physics tag in `.gitmodules`.  Don't forget to make a ChangeLog.
+- Open a PR in [ESCOMP/CAM](https://github.com/ESCOMP/CAM) for your changes in CAM (if calling lists changed) or it may as simple as a PR to update the atmospheric_physics tag in `.gitmodules`. Don't forget to make a ChangeLog.
+    - Be sure to include the `ccpp-conversion` label on your PR
 - If any changes were made to CAM-SIMA (more than likely, at least an update to the atmospheric_physics submodule will probably be needed), open a PR in [ESCOMP/CAM-SIMA](https://github.com/ESCOMP/CAM-SIMA).
 - Once all PRs are merged and tagged, check off the scheme as "Converted" in the [spreadsheet](https://docs.google.com/spreadsheets/d/1_1TTpnejam5jfrDqAORCCZtfkNhMRcu7cul37YTr_WM/edit?gid=0#gid=0)
 

docs/conversion/conversion-background.md

@@ -14,6 +14,7 @@ Put the parameterization that you are going to convert into the [conversion spre
 
 ### Create Github Issues
 1. Create a Github Issue in the [ESCOMP/CAM](https://github.com/ESCOMP/CAM) repo that states which physics parameterization you are planning to convert to the CCPP framework.  
+    - be sure to add the `ccpp-conversion` label
 1. Create another issue in the [ESCOMP/atmospheric physics](https://github.com/NCAR/atmospheric_physics) repo describing the same physics parameterization that you are now planning to add to the collection of NCAR CCPP physics suites.  Doing this allows the software engineers to keep track of which physics routines are being worked on, and which still need to be assigned.  The goal of converting the physics parameterization is to ultimately have the CCPP-ized physics package reside in [ESCOMP atmospheric physics](https://github.com/NCAR/atmospheric_physics) and be removed from [ESCOMP/CAM](https://github.com/ESCOMP/CAM).
 
 ### Setting up your sandbox

docs/conversion/figures/cam-issue.PNG

@@ -43,6 +43,7 @@ As mentioned, there are some calculations/conversions/translations that are perf
     - **update_dry_static_energy**: calculate dry static energy (`dry_static_energy`)
 - **qneg.F90**:
     - **qneg**: Set values for constituent variables that are less than the minimum value to the minimum value (and print out what it's doing - configurable!)
+    - You will want to include qneg in your SDF if you are modifying constituent tendencies in your scheme. It should be after the tendencies are applied and before `geopotential_temp`
 - **physics_tendency_updaters.F90**: apply tendencies output by physics to state variables. You'll need to include a tendency updater in your SDF for any `ptend%X` variables in the CAM-version of your code.
 
 | Scheme name | Description | Inout variable | Input variable |