Learn Finnish: Teen uuden tarjouksen, vaikka olen väsynyt. - I will make a new offer, even though I am tired.

In Finnish grammar, a comma is strictly required between a main clause and a subordinate clause. Since vaikka (even though) introduces a subordinate clause, you must always place a comma right before it when it follows the main clause.

Could I use the word order Vaikka olen väsynyt, teen uuden tarjouksen?

Absolutely! Just like in English, you can start the sentence with the vaikka clause. The meaning stays exactly the same. Just remember to keep the comma between the two clauses.

The translation says "I will make", but isn't teen just the present tense "I make"?

Yes, but Finnish doesn't have a specific future tense word like "will". You use the present tense for both present and future actions. The context—and the fact that the object ends in -n—signals that this is an action that will be completed in the future.

Why does the object uuden tarjouksen end in -n?

Because you are making one complete, whole offer, the object takes the accusative case, which usually looks exactly like the genitive case ending in -n. Remember that the adjective uusi (new) has to match the noun, changing its stem to uude- before adding the -n.