diff --git a/Readme.md b/Readme.md
index 30b289b..7863de7 100644
--- a/Readme.md
+++ b/Readme.md
@@ -59,8 +59,8 @@ Assembly of the mask is very simple, you wil first need to print :
  - supplies for the output one-way valve :
  	- 1 base for the one-way valve [3Dfiles/one_way_valve/owv_base_cap.stl](./3Dfiles/one_way_valve/)
  	- either 1 membrane insert for the one-way valve [3Dfiles/one_way_valve/owv_membrane_insert.stl](./3Dfiles/one_way_valve/), or 1 separate membrane (_printed out of TPU_) [3Dfiles/one_way_valve/owv_separate_membrane.stl](./3Dfiles/one_way_valve/) and 1 holder for the membrane [3Dfiles/one_way_valve/owv_separate_membrane_insert.stl](./3Dfiles/one_way_valve/)
- 	- _Optionally :_ 1 cap to hold a filter at the exit of the one way valve [3Dfiles/one_way_valve/owv_base_cap.stl](./3Dfiles/one_way_valve/). **_Will rquire modifying the adapter_tube file parameters !_**
- - _Optionally :_ supplies for an input-one way valve : **_Will rquire modifying the adapter_tube file parameters !_**
+ 	- _Optionally :_ 1 cap to hold a filter at the exit of the one way valve [3Dfiles/one_way_valve/owv_base_cap.stl](./3Dfiles/one_way_valve/). :warning: **_Will require modifying the adapter tube file parameters !_** :warning:
+ - _Optionally :_ supplies for an input-one way valve : :warning: **_Will require modifying the adapter tube file parameters !_** :warning:
  	- 1 base for the one-way valve [3Dfiles/one_way_valve/owv_base_cap.stl](./3Dfiles/one_way_valve/)
  	- either 1 membrane insert for the one-way valve [3Dfiles/one_way_valve/owv_membrane_insert.stl](./3Dfiles/one_way_valve/), or 1 separate membrane (_printed out of TPU_) [3Dfiles/one_way_valve/owv_separate_membrane.stl](./3Dfiles/one_way_valve/) and 1 holder for the membrane [3Dfiles/one_way_valve/owv_separate_membrane_insert.stl](./3Dfiles/one_way_valve/)
 
@@ -77,9 +77,9 @@ To assemble you can connect the insufltion mask to the adapter with the oppenig
 
 To assemble the output one-way valve you can first screw the base ([3Dfiles/one_way_valve/owv_base_cap.stl](./3Dfiles/one_way_valve/)) into the main tube of the adapter, with the smoother surface pointing down, until it is right under the tube that connect to the insuflation mask. After greasing the surface you can screw the membrane insert ([3Dfiles/one_way_valve/owv_membrane_insert.stl](./3Dfiles/one_way_valve/)_, or equivalently_ [3Dfiles/one_way_valve/owv_separate_membrane.stl](./3Dfiles/one_way_valve/) _and_ [3Dfiles/one_way_valve/owv_separate_membrane_insert.stl](./3Dfiles/one_way_valve/)) until the membrane makes contact with the smooth surface of the base.
 
-If you opted to use an output filter (**_and have accordingly modified the parameters of the adapter tube**), you can no put the filter aterial (_coton, or some other minimaly ait-restricting material_) at the output of the one-way valve, and thread a cap ([3Dfiles/one_way_valve/owv_base_cap.stl](./3Dfiles/one_way_valve/)) to hold it into place.
+If you opted to use an output filter (:warning: **_and have accordingly modified the parameters of the adapter tube** :warning:), you can no put the filter aterial (_coton, or some other minimaly ait-restricting material_) at the output of the one-way valve, and thread a cap ([3Dfiles/one_way_valve/owv_base_cap.stl](./3Dfiles/one_way_valve/)) to hold it into place.
 
-**Note** that if you chose to use an input one-way valve (**_and have accordingly modified the parameters of the adapter tube**), you need to screw the same 3D-prints as for the output one-way valve **before** screwing the ones for the output one-way valve. The pieces for the input one-way valve would be screwed in the same order and orientation as for the output one-way valve, but would be screwed as far as possible into the adapter tube.
+**Note** that if you chose to use an input one-way valve (:warning: **_and have accordingly modified the parameters of the adapter tube** :warning:), you need to screw the same 3D-prints as for the output one-way valve **before** screwing the ones for the output one-way valve. The pieces for the input one-way valve would be screwed in the same order and orientation as for the output one-way valve, but would be screwed as far as possible into the adapter tube.
 
 You can finally screw a canister or plug to each of the two thread, and you have an assembled mask !