Check if an exercise's solution from "Graphics with MMA" book is correct?

Questions
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I am in doubt about whether my procedure to solve an exercise of the book GRAPHICS with MATHEMATICA, FRACTALS, JULIA SETS, PATTERNS and NATURAL FORMS of the authors CHONAT GETZ and JANET HELMSTEDT,has been correct, because unfortunately the authors do not show how it should be the final result of that exercise, which leads me to think that the images I got are not the correct ones. I will mention that this question was also asked in rhe site stackexchange so please can visit it, there is the code used and the images generated. Any help is welcome, thanks for your support.