Watermarking images PIL

So, now that we understood the basics of adding circles, arcs and text on an Image created brand new in PIL, withou using any image on the hard drive or elsewhere, let's watermark our image with a different font-size... I also changed some parts of the code that had no sense, due to some changes made making different version of this code...

from PIL import Image,ImageDraw,ImageFont

# sample text and font
unicode_text = u"SMILE WORLD!" # This is used to shape the image around the text size
font = ImageFont.truetype("consola.ttf", 28, encoding="unic")
font2 = ImageFont.truetype("consola.ttf", 10, encoding="unic")
# get the line size
text_width, text_height = font.getsize(unicode_text)

# create a blank canvas with extra space between lines
# I added 100 to host the image and 30 for the watermark length
canvas = Image.new('RGB', (text_width + 30, text_height + 100), "orange")

# draw the text onto the text canvas, and use black as the text color
draw = ImageDraw.Draw(canvas)
draw.text((5,5), unicode_text, 'blue', font) # This paste the unicode_text=u"SMILE WORLD"

def smile(x=30,y=30):
    draw = ImageDraw.Draw(canvas)
    draw.ellipse((0+x,0+y,90+x,90+y),'yellow','blue') # face
    draw.ellipse((25+x,20+y,35+x,30+y),'yellow','blue') # left eye
    draw.ellipse((28+x,25+y,32+x,30+y),'blue','blue') # left ...
    draw.ellipse((50+x,20+y,60+x,30+y),'yellow','blue') # right eye
    draw.ellipse((53+x,25+y,58+x,30+y),'blue','blue') # right ...
    draw.arc((40+x,50+y,50+x,55+y), 0, 360, 0) # nose
    draw.arc((20+x,40+y,70+x,70+y), 0, 180, 0) # smile

smile(60,28)    
draw.text((5,100), u'This image is covered by copyright', 'blue', font2)
draw.text((5,110), u'pythonprogs.blogspot.com', 'blue', font2)
canvas.show()