You might not even realize you’ve done it before – dipped your brush in water, ran it along a line, and watched the pigment quietly melt.
It’s not bold. It’s not dramatic.
But it’s powerful.
That gentle transition when water softens the edge of a line or lightens a shadow can shift the entire atmosphere of your sketch.
In this post, you’ll learn how to use water in urban sketching to create soft edges, lift highlights, and bring your work to life with subtle emotion. Whether you’re just starting out or looking to loosen up your sketching style, this guide will help you let go of perfection and let the water lead.
Why Use Water in Urban Sketching?
When people think of urban sketching, they often imagine pens, lines, and control. But water brings in another quality. Softness. Spontaneity. Emotion.
Water can:
- Soften hard outlines
- Create tonal shifts and atmospheric effects
- Lift pigment when things feel too heavy
- Add texture and energy through splashes and drips
Learning how to use water in urban sketching is not about being messy or careless. It’s about being expressive. Water helps your sketch feel more like a memory and less like a diagram.
Six Ways to Use Water in Urban Sketching
If you’ve ever worried that your sketches feel too tight or rigid, these techniques are for you. Each one is simple, but together, they’ll help you build flow and feeling into your work.
1. Wake Up Your Paints
Before you even touch the page, spray a little water over your dry pans. This loosens up the pigment and helps your brush glide through the colour. No scrubbing, no overload. Just soft, activated colour ready to move.
2. Start with a Wash
Use a flat brush with clean water to make a wide sweep across your paper. Then drop in colour and let it spread naturally. If the edge looks too sharp, use a damp brush to ease it out and create a softer fade.
3. Draw with a Wet Brush
Take a rigger brush and load it with water and just a hint of pigment. Then, let the brush wander. These watery lines don’t need to be perfect. Think of them as quiet suggestions. They can lead the eye without locking anything in.
This is one of Ian Fennelly’s favourite techniques. It brings energy without effort.
4. Lighten Without Erasing
Sometimes a section feels too dark or heavy. Instead of painting over it, dip your brush in clean water and gently go over the area. Then blot with tissue.
You’ll be surprised how much control you gain from this simple move. One student even shared that she’s rinsed an entire painting under the tap and started fresh from the “ghost” left behind.
5. Add Splashes for Life
Load your brush and flick. That’s it. A few spontaneous splashes can turn a flat wash into something lively and textured. They’re great for suggesting gravel, leaves, bark, or rain.
Let go of aiming. Let them land where they land.
6. Adjust Your Water Load
The real secret to using water well is knowing how much you’re carrying. Dunk deep when you want big, sweeping washes. Dab your brush on a tissue when you need control. Small changes in water load make big differences on the page.
How Water Helps You Fix Your Sketches
If your sketch starts to feel too stiff or overworked, water can help bring it back.
By reactivating areas with clean water and softening the pigment, you can ease transitions, rescue highlights, and reduce that “tight” feeling. Water doesn’t just help you lay colour down. It gives you the chance to change your mind.
Let Water Be the Guide
When you’re new to sketching, it’s easy to believe that more control equals better results. But often, the sketches that feel most alive are the ones that flow.
Learning how to use water in urban sketching is about letting go of the need to get it perfect. It’s about being curious, making space for the unexpected, and trusting yourself enough to loosen your grip.
Ready to learn more?
You’ll find every one of these techniques inside the Rural Sketch Course. Ian Fennelly walks you through how to activate your paints, soften edges, draw with water, and lift highlights. It’s a complete sketching experience you can follow at your own pace.
