Fais attention à ne pas renverser ton café sur le clavier.

Yes. Fais is the tu-form imperative of faire.

• faire = to do / to make
• fais attention = pay attention / be careful

So the sentence is giving a direct instruction to one person in an informal way.

French imperatives often leave out the subject pronoun, so:

• Tu fais attention = you are being careful / you pay attention
• Fais attention = be careful / pay attention

Because the imperative of faire is irregular:

• tu → fais
• nous → faisons
• vous → faites

So:

• Fais attention ! = Be careful!
  not
• Fait attention ! ❌

Fait is usually the third-person singular present (il fait) or the past participle (fait = done/made).

Because in the imperative, French normally drops the subject pronoun.

So instead of saying:

• Tu fais attention...

French says:

• Fais attention...

This is exactly like English dropping you in commands:

• Be careful
• Watch out
• Don’t spill your coffee

Because the expression is faire attention à..., which means to pay attention to... or to be careful not to...

Here it is followed by an infinitive phrase:

• faire attention à + infinitive

So:

• Fais attention à ne pas renverser... = Be careful not to spill...

Other examples:

• Fais attention à fermer la porte. = Make sure to close the door.
• Faites attention à ne rien oublier. = Be careful not to forget anything.

Because after à, French uses the infinitive, and when an infinitive is negative, ne pas goes before it.

Pattern:

• à + ne pas + infinitive

So:

• à ne pas renverser = not to spill

Compare:

• Ne renverse pas ton café. = Don’t spill your coffee.
  
  • this is a negative command
• Fais attention à ne pas renverser ton café. = Be careful not to spill your coffee.
  
  • this is be careful + not to spill

Here renverser means to knock over, to tip over, or to spill by overturning something.

That fits coffee very naturally:

• renverser son café = spill one’s coffee

Verser more often means to pour:

• verser du café dans une tasse = pour coffee into a cup

So in this sentence:

• renverser ton café = spill your coffee not
• verser ton café = pour your coffee

Because ton means your for one person addressed informally, and café is a masculine singular noun.

French possessives agree with the thing possessed, not with the owner:

• ton café = your coffee
• ta tasse = your cup
• tes clés = your keys

If you were speaking formally or to more than one person, it would be:

• votre café

French often uses the definite article (le, la, les) where English would naturally use a possessive like your.

So:

• sur le clavier literally = on the keyboard
• natural English meaning = on your keyboard / onto the keyboard

French does this a lot when the context already makes the owner obvious.

For example:

• Il s’est lavé les mains. = He washed his hands.
  (literally: washed the hands)

Here, everyone understands it is the keyboard near the person being addressed, so le clavier sounds natural.

In this sentence, sur can be understood as on or onto, depending on how you translate it naturally.

• sur le clavier literally = on the keyboard
• in context, English often says onto the keyboard because spilling suggests movement

So both ideas are present:

• location: on the keyboard
• movement/result: onto the keyboard

French commonly uses sur in this kind of situation.

Often yes, but not always exactly.

Fais attention can mean:

• Be careful
• Pay attention
• Watch out

The exact translation depends on context.

In this sentence, Be careful is the best fit because it is about avoiding an accident:

• Fais attention à ne pas renverser ton café... = Be careful not to spill your coffee...

But in another context:

• Fais attention en classe. = Pay attention in class.

Yes. That would also be correct, but the tone is a little different.

• Ne renverse pas ton café sur le clavier. = Don’t spill your coffee on the keyboard.

This is a more direct negative command.

• Fais attention à ne pas renverser ton café sur le clavier. = Be careful not to spill your coffee on the keyboard.

This sounds a bit softer and more like a warning or reminder.

So both are possible, but they are not exactly the same in tone.