One of the most common questions I hear from artists is: “Why doesn’t my portrait look realistic?”

It’s a frustrating feeling.

You’ve chosen the right colours, the proportions look good, and you’ve spent hours adding details. Yet somehow the portrait still feels a little flat.

The good news is that it’s usually not your pencils, your colours, or your ability. More often than not, it’s your values.

Now let’s look at why values make such a difference…

The Secret to Realistic Portrait Drawing

When most people think about realistic portrait drawing, they focus on colours, skin tones and details.

But realism actually comes from something much simpler: Light and shadow.

The highlights bring areas forward.

The shadows push areas back.

Together, they create depth, shape and realism. Without strong values, even a beautifully coloured portrait can look flat.

Why Values Matter More Than Colour

Whilst working on my recent Girl in Glasses portrait, I spent far more time thinking about values than colours.

The skin itself wasn’t simply pink. There were yellows, oranges, reds and all sorts of unexpected colours woven throughout the face.

But none of those colours would have mattered if the values weren’t right.

This is where many artists get stuck.

They focus on matching colours perfectly but overlook the thing that actually creates the illusion of three-dimensional form. Think about contouring makeup:

Darker tones make areas recede.

Lighter tones bring them forwards.

Drawing works in exactly the same way. The shadows around a face create structure. The highlights on a forehead or nose create form. Together, they help transform a flat drawing into a realistic portrait.

How to Improve Your Realistic Portrait Drawing

If your portraits aren’t looking as realistic as you’d like, try focusing on these three things:

1. Look for Light and Shadow

Rather than concentrating on eyes, noses and lips, look for the shapes of light and shadow across the face.

2. Don’t Be Afraid of Dark Values

Many artists don’t go dark enough with their shadows, which can leave portraits looking flat.

3. Focus on Values Before Detail

Adding more eyelashes or skin texture won’t fix a portrait if the values aren’t working.

Get the structure right first, then add the details.

So the next time your portrait feels flat, instead of reaching for another pencil or adding more detail, step back and look at your values.

Ask yourself:

Are my highlights light enough?

Are my shadows dark enough?

Because realism doesn’t come from drawing every pore or eyelash. It comes from creating the illusion of light, shadow and form.

And often, that’s the missing piece that takes a portrait from looking flat to feeling realistic.