I met Sidney Guerra when I was in my last year of college. He is an example that the most important thing is the person, the rest can be learned. In a few months I was already producing books for Editora Mercuryo, where I was managing partner.

When he grew too big to fit into a company, I encouraged him to open his own business. 

Today it provides services to several large Brazilian publishers, it continues to grow and is already a giant.

Beautiful, reliable and professionally impeccable work.

I've known Sidney Guerra for over 13 years, when I started my career in editorial production as his intern.

We worked together for almost 4 years and I can guarantee that everything I learned in this area was from him. 

Always attentive, competent and patient, he shared his knowledge and showed his talent in creativity.

Always seeks to innovate and is always ready to face new developments on the market.

Over the years, I have followed his successful trajectory, both in his professional and personal life.

There's no point in having an incredible guitar and pedalboard if the amplifier is half-assed. Nor do legal articles with lame layout.

Sidney is a kind of 'Marshall amplifier' for materials.

Working with him gives me a lot of peace of mind, I know he's a guy who respects opinions, works on time and speaks the reader's language.

I can't see Slammin' without Sidney Guerra in the layout.

Sidney Guerra has worked for Rafael Copetti Editor since 2015, being the cover artist and layout artist for almost all of our books. 

An excellent, competent and responsible professional for whom we do not hesitate to trust our books.

Sidney Guerra is great at visual arts, very quick to understand what needs to be done and very creative.

We've already done a lot with books, websites, publishers and courses.

An intelligent and good-humored guy who is a pleasure to work with.

I discovered Sidney's work through Laura Bacellar. I checked his portfolio, client testimonials and chose to write my e-book with him. 

We had meetings on line to decide on the cover concept and he presented three very beautiful options. We changed just a few details in the chosen cover, integrating elements from the other two. 

The result was incredible. I was also very satisfied with the layout of the e-book and all the advice provided to put it on Amazon.

It's good to know that there are serious professionals like Laura and Sidney on the market to guide beginner writers.

The work carried out by Sidney Guerra reveals commitment, seriousness and great competence!

I was very satisfied and recommend it!

Sidney is an excellent professional, very committed to deadlines, the quality of the material and the improvement of his techniques.

In addition to understanding complex layout concepts and our editorial madness, he also brings innovative solutions that facilitate internal work.

I recommend it wholeheartedly.

I handed over the design and creation of the cover of my novel to Sidney Guerra and it was my best decision.

The cover came out very professional and was highly praised upon release. 

A beautiful cover is essential and met the requirements that a well-made cover must present: visually beautiful and an image appropriate to the historical-novel theme. 

I became a customer.

In addition to being a great person to work with, Sidney Guerra always tries to understand the profile of the work to be carried out and has the advantage of doing it quickly and well!

I can say that few designers and creatives are like this.

He also has great knowledge of the area.

I already recommended it and I recommend it again!