How to overlap two or more images using paste()?

I'm basically following the advice given to you in the comments – but since I was already preparing some code, that'd be my solution:

import tkinter as tk
from PIL import Image, ImageTk

# List of images (notes) to show
notes = ['fifty_pound.jpg', 'twenty_pound.jpg', 'twenty_pound.jpg']

# Same size for each note
x_note, y_note = (250, 150)

# Load images
notes = [Image.open(n).resize((x_note, y_note), Image.ANTIALIAS) for n in notes]

# Number of notes to show
n_notes = len(notes)

# Overlap (or offset) between notes
x_off, y_off = (50, 30)

# Calculate window size
window_size = (x_note + (n_notes - 1) * x_off, y_note + (n_notes - 1) * y_off)

# Create window
window = tk.Tk()
window.title('main')

# Create blank (white) image to paste notes on
new_image = Image.new('RGB', (window_size), (255, 255, 255))

# Paste notes
for i, n in enumerate(notes):
    Image.Image.paste(new_image, n, (i*x_off, i*y_off))

# Rendering
new_image_render = ImageTk.PhotoImage(new_image)
test_image_label = tk.Label(image=new_image_render)
test_image_label.image = new_image_render
test_image_label.pack()

window.mainloop()

Output:

Hope that helps!

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System information
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Platform:    Windows-10-10.0.16299-SP0
Python:      3.8.1
Pillow:      7.0.0
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