diff --git a/Readme.md b/Readme.md
index 21c07fd..20f8f48 100644
--- a/Readme.md
+++ b/Readme.md
@@ -159,6 +159,8 @@ Traces should appear black on white background.
 
 Start with `--exposure 60` and bracket from there — Bungard presensitized at 405nm typically lands between 30–120s depending on board vintage and storage.
 
+#### 4.1. Export print files for copper layers
+
 Export the front and back **copper** layers for 120 seconds exposure
 ```bash
 pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-Front.gtl \
@@ -170,6 +172,8 @@ pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-Back.gtl \
     --output pm4n/Flow_Controller_Panel-Back.pm4n
 ```
 
+#### 4.2. Export print files for soldermask layers
+
 Export the front and back **soldermask** layers for 300 seconds exposure
 ```bash
 pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-F_Mask.gtl \
@@ -181,6 +185,8 @@ pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-B_Mask.gtl \
     --output pm4n/Flow_Controller_Panel-B_Mask.pm4n
 ```
 
+#### 4.1. Export print files for silkscreen layers
+
 Export the front and back **silkscreen** layers for 300 seconds exposure
 ```bash
 pcb-expose.sh Dummy.pm4n gerbers/Flow_Controller_Panel-F_Silkscreen.gtl \