draw a 3d hand optical illusion
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Lesson Details
Hullo, this is Ethan Nguyen for My Cartoon Tutorials.com and in this video, I'm going to show you how to draw a 3D hole optical illusion. Here's what the illusion volition wait similar. 
Now allow me show yous how I did it.
Step i – Drawing the Ellipses
The offset step is to draw a big ellipse. The rest of the drawing will be done in ink, only I will draw this offset ellipse in pencil considering we will be erasing information technology later on. 
Next, draw a smaller ellipse inside the first one using ink. You'll desire to make this one slightly shorter and more rounded. And instead of placing it correct in the centre, motion it down slightly. 
Past the way, I made a light pencil sketching of the entire drawing before hand and is now simply going over it with ink. That way, the drawing process volition be a lot smoother and yous won't accept to meet me erasing and re-cartoon a bunch of times. Merely when y'all're drawing this yourself, don't be agape to change things around a bunch of times to get the curves just right. Then draw another smaller ellipse inside this ane. Once again, you'll want to make information technology more rounded and identify it closer towards the bottom. 
Echo this process three more times. 
You can see the design very clearly here. Each ellipse is a little more like a circle and they grouping together at a single point.
Footstep 2 – Drawing the Tiles
Side by side, we're going to draw some straight lines from the center outward. 
The gaps between these lines will exist widest at the bottom and gradually narrow equally they move upwards. To help planing out the spacing and make them more consequent, I like to start at both ends at the same time. That way I'll have a skillful thought of how wide the stripes at the top will exist and plan accordingly. 
One important particular is to make sure yous finish upward with an even number of stripes. You'll come across why this is important in a minute. Once nosotros have all the stripes drawing in, allow's erase the outer most circumvolve. 
Step three – Inking and Shading
At present, we'll use a sharpie marker to fill in the outer circle using an alternating pattern. This is why it's of import to have a fifty-fifty number of stripes. If the stripes were odd, it would throw the design out of sync. 
The large sharpie marking won't be able to color in the squares all the way to the edge, so we'll but go every bit close to the edge equally we can for at present. Continue doing this for all the circles. 
At present, allow's take a smaller pen and fill in the pocket-size gaps that we couldn't get with the larger marker. 
The last footstep is to create a dark gradation at the center hole. I'll use a 9xxb graphite pencil to put in a base of operations tone. You lot also tin can use a 4B or 6B pencil for this. 
And I'll employ a blending stump to shine out the tone. 
And now I'll utilize a charcoal pencil to put in a really nighttime layer for the pigsty. 
And that's it! Now all we take to practise is look at this cartoon at an angle to see the 3D optical illusion.
Source: https://mydrawingtutorials.com/how-to-draw-a-3d-hole-optical-illusion/
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