1st:Open PicsArt and pic any picture.
2nd:Press the second icon, Which is Filter
3rd: Pick any filter you want if you think that the filter matches to your book cover then try it.
04: Dont use too much of filter i think i use filter just maximum of 4 dont forget to sharpen it,To make the image HQ/HD (High Quality/High Definition)
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Do you have suggestion or questions? Please let me know don't forget to tag me @Jiminnati