The author says:

Steve’s Web is a book of short stories with a strong Internet Safety theme. The protagonist, Steve, tells his stories in his own words and relates how his online gaming account was hacked, how he convinced his English class (and himself) that Martians have already landed and how a virtual monster put him in hospital! The book is designed to appeal to primarily boys aged between about 9 and 14.

Nathan says:

Cute, but… YOU HAVE MARTIANS* IN THE STORY AND THEY’RE NOT MENTIONED OR DEPICTED ON THE COVER???

*or the possibility of Martians

Look at how middle-grade books are marketed.  They are not sold with text-heavy covers than don’t really tell you about the story or stories.  They are sold with clear, grab-your-attention titles, and clear, grab-your-attention artwork.

Here’s the top row of books Amazon is featuring for that age range:

Clear, interesting text, and an interesting central image. This is how the target audience for your book expects books aimed at them to look.  Will they know that your book is also aimed at them?  Learn from your competition.

Other comments?

The author says:

Book Micro blurb: ‘When two young fisher sons dare each other to visit the forbidden island of Traakenholt their destinies become entwined in the curse of the ’First and Final Dragon’. Now they must sacrifice everything as they battle the terrible force they have unleashed.’

This book is intended to be part of a hard sci-fi/hard fantasy series. The series is very wide ranging in plots and settings. Nevertheless, I wanted to try and find a graphical style that is simplistic and flexible enough to retain a certain level of commonality across the whole series.

Nathan says:

Here’s the problem: Nothing I see could be interpreted as signifying a hard SF novel.  You want to take the long view with series branding, and that’s fine, but you’ve got to get readers to open the first book in the series first, and there’s nothing here to tell hard SF readers, “This is a book aimed at you.” (While there’s also nothing that’s “hard fantasy” about this either, at least it doesn’t have the vibe of “definitely not hard fantasy” like is has with hard SF.)

There are other design tweaks we could go into, but until we correct the problem of the initial visual concept not being aimed at your target audience, it’s all straightening deck chairs on the Titanic.

(I will point out, though, that your pseudonym is unbearably twee.  Hard SF readers are not a readership known for their endearment to such things.)

The author says:

Waiting for You is a contemporary Women’s Fiction novel set in Charleston, SC. Shortly after Kylie Lewis meets Adam, an aspiring musician with a history of his own loss, her mother is diagnosed with terminal breast cancer. Stricken with the fear of her inevitable loss, she struggles with her budding relationship with Adam, despite his empathy. This novel is aimed at women, mainly aged between 25-35.

Nathan says:

With the caveat that I’m not the target audience, here are my comments:

• Any time you wrap, distort or otherwise modify text, it adds as much emphasis to it as bolding it.  Thus, your title comes across as “Waiting FOR You.” It also renders the hourglass less immediately recognizable as an object, because it pulls the lower bulb into the mental space of reading the title while leaving the upper bulb in the background. My advice would be to let the “FOR” be in the same unaltered font as “WAITING” and “YOU,” and don’t worry about it exactly overlapping the lower bulb.
• The title font has a problem: the capital “I” has cross-strokes on the top and bottom fully as long as the top of the “T,” rendering the latter harder to read.  I’d experiment with using the font’s lowercase “L” in place of the capital “I” both times.
• Your byline is hard to read even at full size, and in thumbnail it’s utterly invisible.  I don’t know how married you are to that font, but at the very least I’d enlarge it so it rivals “WAITING” in width, use uppercase for the start of both names, and maybe play with making it bolder.

I’ll leave other comments to the rest of y’all.

The author says:

Renegades at Sea is vol one of the Adventures of Chas from Tas. Chas has sailed on racing yachts all his life , racing and delivering them to all the oceans of the world. The book is about the scary,dangerous, amusing,or downright hilarious adventures that he has had.He is a true gypsy of the sea.

Nathan says:

You’ve got a very good, very active illustration. You need to make sure that the type supports instead of conflicting with it.

1. You’re using very sedate fonts (which is a nice way to say “dull”). These would be great fonts for interior text, but they underperform on the cover.
2. At the very least, you should be able to read some words from the title at thumbnail size. Here, thanks to the combination of thin lines and color blend, I can barely tell that the title exists at thumbnail size.
3. You already have Chaz’s face overlapping the main image; you don’t want the second intrusion, the white square with the blurb from Simon Le Bon (!) to clutter it further.
4. Remember, the point of the cover is to intrigue the reader enough to either flip the book over and read the back or scroll down and read the online description, depending on the venue. Trim down the blurb, the credits for the forewords, etc. so that the impact of the main image isn’t diluted.

Any other comments?