diff --git a/README.md b/README.md
index 97cdc4d..ccacd17 100644
--- a/README.md
+++ b/README.md
@@ -15,57 +15,61 @@ Before cloning repository, you need these to succesfully use the application.
 * python version 3.10 is a requirement might work on earlier python 3 versions
 
     ```sh
-        sudo apt install python3.10
+    sudo apt install python3.10
     ```
 
 * virtualenv for virtual enviroment creation
 
     ```sh
-        pip install virtualenv
+    pip install virtualenv
     ```
 
 # Installation
 
 1. Go to a suitable installation folder, for example Documents.
     ```sh
-        cd /home/username/Documents
+    cd /home/username/Documents
     ```
 
 2. Clone the repository to a suitable directory, for example 
     ```sh
-        git clone ssh://git@strade.fit.vutbr.cz:3022/xlanro00/BP_DP-xlanro00.git
+    git clone ssh://git@strade.fit.vutbr.cz:3022/xlanro00/BP_DP-xlanro00.git
     ```
 
 3. Go inside cloned directory
     ```sh
-        cd BP_DP-xlanro00
+    cd BP_DP-xlanro00
     ```
-v
+
 4. Create and enter the virtual enviroment.
     ```sh
-        virtualenv .venv && source .venv/bin/activate
+    virtualenv .venv && source .venv/bin/activate
     ```
 
 5. Install required python modules from requirements.txt.
-
     ```sh
-        pip install -r requirements.txt
+    pip install -r requirements.txt
     ```
 
 6. Run the application, as an example there is a file in res/examples called Palec_P4.tif. This is shown in the section below.
 
 # Filtering images
 
+* You will need to enter the virtual enviroment every time you want to use the application. 
+    ```sh
+    source .venv/bin/activate
+    ```
+
 Once all the requirements are installed, the program is ready to use. There are two ways to enter the filters:
 
 1. manually list filter names and parameters from command line
     ```sh
-        python3 src/main.py res/examples/Palec_P4.tif res/examples/Palec_P4.png 600 denoise_tv_chambolle iterations=1 weight=0.2 median ksize=5
+    python3 src/main.py res/examples/Palec_P4.tif res/examples/Palec_P4.png 600 denoise_tv_chambolle iterations=1 weight=0.2 median ksize=5
     ```
 
 2. from preset saved in a json config file, that can be used to tune and modify existing presetrs, or create new ones
     ```sh
-        python3 src/main.py res/examples/Palec_P4.tif res/examples/Palec_P4_from_preset.png 600 --config config/config.json git_example
+    python3 src/main.py res/examples/Palec_P4.tif res/examples/Palec_P4_from_preset.png 600 --config config/config.json git_example
     ```
 
 # Configuration and presets
@@ -181,14 +185,14 @@ In base mode the output model will be a curved finger model, with optional param
 First optional parameter is papilar line height, second rate of curvature along x axis and the third is the rate of curvature along y axis. 
 
 * General form for curved stl generation
-```sh
+    ```sh
     python3 src/main.py input_file output_file dpi --config config_file preset --stl height_line height_base curvature_x curvature_y
-```
+    ```
 
 * Working example curved stl generation
-```sh
+    ```sh
     python3 src/main.py res/examples/Palec_P4.tif res/examples/Palec_P4_from_preset.png 600 --config config/config.json git_example --stl 2 10 2 2
-```
+    ```
 
 # Generating planar finger model
 
@@ -196,14 +200,14 @@ Using `-p` switch makes the generated model planar.
 Optional parameters are model base thickness and papilar lines height, they are set after stl file name.
 
 * General form for planar stl generation
-```sh
+    ```sh
     python3 src/main.py input_file output_file dpi --config config_file preset --stl height_line height_base -p
-```
+    ```
 
 * Working example planar stl generation
-```sh
+    ```sh
     python3 src/main.py res/examples/Palec_P4.tif res/examples/Palec_P4_from_preset.png 600 --config config/config.json git_example --stl 2 10 -p
-```
+    ```
 
 # Mapping to existing finger model