The established interior designer has offices in the USA and the UK, and also has his own line of furniture and fabrics.  With in-depth knowledge of how items are designed and made, as well as how to pull a room together, Justin imparts his decorating wisdom for how to design kitchens, select fabrics and mix finishes. Read on for what to do, and what you should definitely not do when decorating. See: Interior design tips – decorating secrets for the world’s top experts

Get your kitchen remodel right

Invest in two dishwashers, if you can. It’s wonderful to have one to stack the detritus before a dinner party and one for glassware only.Avoid cabinets on the walls if you’re going for a country feel. An old dresser is far more welcoming.Buy the best cooker you can afford; I am an Aga man, but I also do love La Cornue.Find confidence with color; there are some wonderful shades out there for cabinetry. Avoid shiny unit doors with no handles – you’ll be fighting a constant battle against smears 
and greasy fingermarks.

How not to design a kitchen – the mistakes to avoid

Don’t forget the practicalities of choosing good lighting – there’s nothing worse than not being able to see your cooker, because the light is behind you.Resist having open shelves if you’re a 
neat freak because they will get cluttered; they can also get a bit dusty and greasy.Don’t favor counter space over sink size – you still want to be able to properly wash up a roasting pan!Avoid being too precious about finishes; wood and marble will not always look like they did on day one, but that’s their character.

See more: Kitchen ideas – decor and decorating ideas for open-plan, galley, U-shaped and L-shaped kitchens

How to select fabrics – successfully

Use natural fibres – they hang better, have a finer sheen and 
the colours will play fewer tricks with artificial light. Consider your makers - purchase from makers that support sustainability and communities, such as John Robshaw does in India.Ensure your cloth backgrounds tone together; some are yellowy, some are grey and don’t mix well, even if the patterns complement.Combine weights and textures - this will create an established feel, so layer weaves, velvets, linens, bouclés and silks. 

How not to select fabrics – design mistakes to avoid

Don’t splurge in the wrong places - spending on fabric and scrimping on the make up – it will look terrible, while a less-expensive fabric can look beautiful when sewn well.Avoid being obsessive fabric matching - colors won’t always match exactly. You’re creating ambience and atmosphere, not a clinical colour project. 

See more: Kit Kemp’s interior design tips – the dos and don’ts masterclass

How to mix finishes – get your interior design spot on

Create a patina of interest by layering styles, eras and colours in 
a variety of combinations.Notice subtle details; the gentle curve of a leg or a tone in the wood are the features you’ll love forever.Pick your wood carefully - woods can have a blue, yellow or red tinge so pick types that tone; oak sits well with mahogany but not so well with macassar ebony.Focus on scale – larger pieces give the space a handsome feel but little pieces that are too small in a room can feel rather old-fashioned.

Susie Watson’s interior design tips – the dos and don’ts masterclass

How not to mix finishes – easy mistakes to avoid

Don’t buy everything from the same place. Designers have a signature that can sing when in isolation but en masse will look too ‘show home’.Add character by mixing price points - don’t worry about placing less expensive items with higher-priced ones; it adds character.Ignore passing trends - don’t throw out things just because they’re out of fashion; reinvent them with a makeover.Don’t be afraid of mixing metals; the studwork on a chair doesn’t have to match the light switch!

See more: Find Justin Van Breda (opens in new tab)’s designs on his website