diff --git a/__pycache__/constants.cpython-310.pyc b/__pycache__/constants.cpython-310.pyc
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diff --git a/__pycache__/mvc.cpython-310.pyc b/__pycache__/mvc.cpython-310.pyc
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index 0000000..e233d08
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diff --git a/__pycache__/sign_up_window.cpython-310.pyc b/__pycache__/sign_up_window.cpython-310.pyc
index 366686f..02199c4 100644
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diff --git a/book_search/__pycache__/book_search.cpython-310.pyc b/book_search/__pycache__/book_search.cpython-310.pyc
new file mode 100644
index 0000000..aa116d7
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diff --git a/book_search/__pycache__/constants.cpython-310.pyc b/book_search/__pycache__/constants.cpython-310.pyc
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index 0000000..e1aed14
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diff --git a/book_search/constants.py b/book_search/constants.py
new file mode 100644
index 0000000..ef78bba
--- /dev/null
+++ b/book_search/constants.py
@@ -0,0 +1 @@
+WINDOW_ICON = "icon/app_icon.ico"
\ No newline at end of file
diff --git a/book_search/icon/app_icon.ico b/book_search/icon/app_icon.ico
new file mode 100644
index 0000000..fc46a1e
Binary files /dev/null and b/book_search/icon/app_icon.ico differ
diff --git a/book_search/main.py b/book_search/main.py
new file mode 100644
index 0000000..99c5760
--- /dev/null
+++ b/book_search/main.py
@@ -0,0 +1,12 @@
+import sys
+
+from PyQt6.QtWidgets import QApplication
+from book_search import BookSearch
+
+def main():
+    app = QApplication(sys.argv)
+    window = BookSearch()
+    window.show()
+    sys.exit(app.exec())
+
+main()
\ No newline at end of file
diff --git a/constants.py b/constants.py
new file mode 100644
index 0000000..ef78bba
--- /dev/null
+++ b/constants.py
@@ -0,0 +1 @@
+WINDOW_ICON = "icon/app_icon.ico"
\ No newline at end of file
diff --git a/main.py b/main.py
index abfd43e..4d9d571 100644
--- a/main.py
+++ b/main.py
@@ -1,14 +1,11 @@
-# Main file
-
 import sys
 
-from PyQt6.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QVBoxLayout
-from PyQt6.QtGui import QIcon, QFont, QPixmap
-from sign_up_window import Window
+from PyQt6.QtWidgets import QApplication
+from sign_up_window import SignUpWindow
 
 def main():
     app = QApplication(sys.argv)
-    window = Window()
+    window = SignUpWindow()
     window.show()
     sys.exit(app.exec())
 
diff --git a/sign_up_window.py b/sign_up_window.py
index fe9e7c2..5da47b5 100644
--- a/sign_up_window.py
+++ b/sign_up_window.py
@@ -1,27 +1,26 @@
-# sign_up_window
-
 import sys
 
 from PyQt6.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QVBoxLayout
 from PyQt6.QtGui import QIcon, QFont, QPixmap
+from constants import WINDOW_ICON
 
-class Window(QWidget) :
+class SignUpWindow(QWidget) :
     def __init__(self) :
         super().__init__()
         self.setWindowTitle("X_Library | Sign Up Window")
-        self.setWindowIcon(QIcon("icon/app_icon.ico"))
+        self.setWindowIcon(QIcon(WINDOW_ICON))
         self.resize(800, 600)
-        
+        self.create_widgets()
+
+    def create_widgets(self) :
         window_layout = QVBoxLayout()
-        # image box
+
         image_box = QLabel(self)
         captcha_image = QPixmap("icon/app_icon.ico")
         image_box.setPixmap(captcha_image)
-        image_box.setGeometry(100, 100, 300, 300)
         window_layout.addWidget(image_box)
-        # input box
+        
         input_box = QLineEdit(self)
-        input_box.setGeometry(150, 400, 200, 30)
         window_layout.addWidget(input_box)
-        # applying layout
+
         self.setLayout(window_layout)
\ No newline at end of file