diff --git a/.Rbuildignore b/.Rbuildignore
index 09cfdba..069b3ea 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -3,5 +3,6 @@
 ^.*\.iml$
 ^.*\.Rproj$
 ^\.Rproj\.user$
-^CONTRIBUTING\.md$
+^.*\.md$
+^doc$
 ^LICENSE$
diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 0b5b742..0662c3d 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -80,7 +80,37 @@ jobs:
 
       - name: Upload check results
         if: failure()
-        uses: actions/upload-artifact@main
+        uses: actions/upload-artifact@v2
         with:
-          name: ${{ matrix.config.os }}-r${{ matrix.config.r }}-results
+          name: ${{ matrix.config.os }}-r${{ matrix.config.r }}-check-results
           path: check
+
+# ######################################################################################################################
+# Package submission checks
+# https://cran.r-project.org/web/packages/policies.html#Submission
+# ######################################################################################################################
+      - name: Build the source package
+        run: |
+          R CMD build .
+          ls -la
+      - name: Upload the source package
+        uses: actions/upload-artifact@v2
+        with:
+          name: ${{ matrix.config.os }}-r${{ matrix.config.r }}-source-package
+          path: bpmnVisualization_*.tar.gz
+
+
+      #  Sets up LaTeX with tinytex, for PDF generation
+      # not needed before as the checks on the repo sources are done with --no-manual
+      - uses: r-lib/actions/setup-tinytex@v1
+
+      - name: Check the source package
+        id: source_package_checks
+        run: R CMD check --as-cran bpmnVisualization_*.tar.gz
+
+      - name: Upload source package check results
+        if: ${{ failure() && steps.source_package_checks.outcome == 'failure' }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: ${{ matrix.config.os }}-r${{ matrix.config.r }}-source-package-check-results
+          path: bpmnVisualization.Rcheck
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 9be73b7..af281bd 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -149,14 +149,17 @@ Create a new PR and merge it, if the version in the [DESCRIPTION](./DESCRIPTION)
 
 - Pull the new version created by the release workflow: `git pull origin`
 - Ensure you are on the last tag locally: `git checkout vX.Y.Z`
-- Open the project in the R Studio
-- On the **Build** tab, click on **More** > **Build Binary Package**
-<p align="center"><img title="Build Binary Package" src="./doc/r-studio-binary-build.png" alt="Build Binary Package"></p>
-
-- Go to the parent folder of the project. You should find a file named like `bpmnVisualization_X.Y.Z.tgz`.
-- Fill all the fields of this [web form](https://xmpalantir.wu.ac.at/cransubmit/), and load `bpmnVisualization_X.Y.Z.tgz` file.
-- Submit
-<p align="center"><img title="Submitting to CRAN" src="./doc/cran-submitting.png" alt="Submitting to CRAN"></p>
+- Build the source package. Please read [the CRAN Submission policies first](https://cran.r-project.org/web/packages/policies.html#Submission)
+  - Solution 1: Build the source package with RStudio 
+    - Open the project in RStudio
+    - On the **Build** tab, click on **More** > **Build Source Package**
+    - Go to the parent folder of the project. You should find a file named like `bpmnVisualization_X.Y.Z.tgz`.
+  - Solution 2.
+    - from the project directory, run `R CMD build .
+    - You should find a file named like `bpmnVisualization_X.Y.Z.tgz` in the project directory.
+- Do the actual submission
+  - Fill all the fields of this [web form](https://xmpalantir.wu.ac.at/cransubmit/), and load `bpmnVisualization_X.Y.Z.tgz` file.
+  - Submit
 
 ### Communicate about the release
 
diff --git a/DESCRIPTION b/DESCRIPTION
index 268dab8..ff1afad 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: bpmnVisualization
 Type: Package
-Title: Visualize process execution data on BPMN diagrams
+Title: Visualize Process Execution Data on BPMN Diagrams
 Version: 0.1.0
 Authors@R: c(person("Celine", "Souchet", role = c("aut", "cre"), email = "celine.souchet@bonitasoft.com"),
              person("Thomas", "Bouffard", role = "aut"))
diff --git a/doc/cran-submitting.png b/doc/cran-submitting.png
deleted file mode 100644
index c430887..0000000
Binary files a/doc/cran-submitting.png and /dev/null differ
diff --git a/doc/r-studio-binary-build.png b/doc/r-studio-binary-build.png
deleted file mode 100644
index de45401..0000000
Binary files a/doc/r-studio-binary-build.png and /dev/null differ