Your sentence looks like a bad attempt to translate from English, "I hope you do well on your test." A better way of saying that in French might be
Je te souhaite bon courage pour ton examen.
or
J'espère que tu réussis ton examen.
What can you do well? - What are you good at?
It's "Fais de jolis reves et dors bien. Bisous" and it means "Have sweet dreams and sleep tight. Kisses".
what do you do
qu'est-ce que je fais mal ? is the literal translation of 'what am I doing wrong'. In informal (but quite acceptable) speech, we would say "qu'est-ce que je fais de travers" or "qu'est-ce que je ne fais pas bien"
Make beautiful dreams
non, j'aime bien : no, I like (that) much très bien : very much quelle : what qu : untranslatable without context fais : do
What can you do well? - What are you good at?
"fais bien attention" = be cautious / take care of yourself / stay safe"bonne nuit" = good nightGood night and have sweet dreams.
It's "Fais de jolis reves et dors bien. Bisous" and it means "Have sweet dreams and sleep tight. Kisses".
Comment tu fais? in French means "How do you do it?" in English.
The infinitive form of "fais" is "faire," which means "to do" or "to make" in English.
what do you do
To say "you are doing well" in French, you could say vous faites bien! If you know the person well, you could say tu fais bien!
I do/I'm doing
what do you do
(my health is not good) : je ne vais pas bien, je ne suis pas bien
Je vais très bien, je vous remercie beaucoupmeans I'm fine, thank you very much