Every curve sketched in pencil by Johanna Basford's hand is drawn from a memory and inked into permanence with a fineliner.

From childhood trips over the water to Arran to the fish farm she grew up on, all have sparked the imagination of the Aberdeenshire artist, who shot to fame with her intricate colouring books.

Her creations Secret Garden, Enchanted Forest and Lost Ocean have sold a combined total of more than 20 million copies worldwide.

Johanna's latest creative offering, Magical Jungle, has seen the 33-year-old delve past her memories and straight into her imagination.

"I had this feeling that I wanted to do a tropical book but I hadn't travelled to those kinds of places," says Johanna.

It was a trip to the Winter Gardens in Duthie Park, Aberdeen, with her young daughter and its large greenhouse planted with unusual flowers that helped to bring the book to life.

Looking at the imposing vegetation, her toddler daughter pointed into the undergrowth and said 'look mummy there's a tiger'.

"I just thought, that's so cool that she has this kind of imagination," Johanna says.

"A child doesn't feel constricted by what they may or may not see in real life, they can just take a little seed of inspiration and grow it into something wonderful."

Johanna admits she has never seen a tiger either but seeing the world through her daughter's eyes, through storybooks and imaginative thinking, helped create the monkeys, tropical birds and swamp creatures hidden throughout the pages.

Taking inspiration from plants spotted on family holidays to trips to botanical gardens, the illustrator has created rich vegetation for the swamps and trees for her latest book.

"I think it's just about taking all those ideas and snippets of inspiration and melting them together to make something beautiful," Johanna says.

The release of Magical Jungle, which aims to inspire adults to pick up pencils and unplug from phones, follows on from the incredible success of her previous three books.

Her debut book Secret Garden has sold almost seven million copies since launching in 2013, three million of those in China alone, with Lost Ocean selling a million copies in just eight weeks.

While colouring books for adults has been touted as a craze rather than a creative outlet, Johanna believes the books have unearthed an entire community of colourists, creating a whole new creative genre in the process.

"We've seen in the last couple of years that it's very much moved from the idea of being a trend to becoming more of a category, so it's been adopted in people's creative practices the same way that oil painting or sketching or embroidery is," she says.

The #johannabasford hashtag on Instagram has more than 230,000 uploads of creative interpretations of Johanna's work.

Believing her books to be a collaborative effort, she has also shunned traditional early releases of Magical Jungle to reviewers, offering them instead to some of the top colourists and fans around the world.

In the run up to the book's release on August 11, the 30 recipients of the advance copies have been sharing their work online, delighting Johanna with their interpretations of her black and white drawings and bringing them to life in colour.

But the incredibly detailed, colour saturated and freehand additions to Johanna's work that can be found on social media can appear to be off-putting for some people.

Recent comments on some pictures have disheartened fans who say they can't colour in the same way as somebody else.

"I think that's just that bit of adult human emotion that comes through, I don't think children ever feel like that, I think it's something we develop as we get older," Johanna says.

"But I think of that as an opportunity to inspire those people, to encourage them and to really reassure them there's no right or wrong way to colour, there's no bad or good colours and it really doesn't matter if you go over the lines."

Johanna listens to her online colouring community to pinpoint what works and what doesn't for her readers.

It has helped to inspire changes in the tooth and colour of the paper her designs are printed on, given her ideas for book concepts and even the styles of drawings.

To please her fans, she has added lots of double page spreads into Magical Jungle after listening to their feedback.

One of the biggest requests the illustrator has received has been for a festive colouring book.

Although initially hesitant to create something seasonal that would only be relevant for a few weeks of the year, a charity drive that donated more than £15,000 to Mary's Meals in exchange for a set of exclusive Christmas printouts was the push Johanna and her publishers needed.

In October, Johanna's Christmas will be unveiled in a slightly different format to her usual books, filled with 40 designs printed on single sheets of perforated paper, designed to be pulled out and framed or turned into creative Christmas projects.

It is turning into another busy year for the illustrator, who has also released a set of phone covers with colouring-in inserts and created a hummingbird design for cleaning brand Method's products.

Her business acumen and determination to succeed was rewarded in June when it was revealed she would receive an OBE in the Queen's birthday honours list for her services to art and entrepreneurship.

"I feel very honoured to have been selected for this," she says.

"I think it's more of an indication as to how popular the category has become as a whole and I think it's a really nice recognition that if you work hard and truly believe in an idea and are willing to put everything into it, you can build something really cool."