Faults of print

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On the back cover it is registration black which should never be used in designes. Inc limit is 300% and that is too much it can make paper tear or bleed over. Also, it is 100% cyan, 100% megenta, 100% yellow and 100% black so too much ink. alternative is to use black ink. Images need to be opened in photoshop to change them and not in InDesign and change mode from RGB to CMYK.
One of swatches is RGB colour which is no good for print. Need to double click on colour and get nearest CMYK match.

Colour not up to bleed line, Theres 8 swatches there are some unused spot colours, pictures are scaled up in InDesigh. One of images missing, The tree image is very low resolution when it is an Illustrator image and it shows up all jaged when it should be smooth.