Verified answer

hmm not completely right, it would be :

الشئ الجميل ليس دائما مثالي

:)

i think you are trying to say an egyption proverb الحلو ما يكملش elhelw ma yekmalsh

which means you cant make it perfect 100%

that what i think

and about your question how to write the arabic sentence currectly

ليس كل شئ جميل مثالي which means not everything beautiful is perfect

or maybe you want to say not everything perfect is beautiful so it will be

ليس كل شئ مثالي جميل

no it's not ,it should be something like this

الـشيء الـجـمـيـل هـو لـيـس دائـما مـكـتـمل

Goddess ,is right but there's another word for it which is الـهـه

Its perfect.