yes
I would end it with a period [.] after the word endeavors. The sentence is fine.
Jack has begun to pursue new endeavors.
Many people would capitalize the word 'congratulations' or 'welcome' and follow it immediately with an exclamation point, and then begin a new sentence, capitalizing (of course) the first word of the new sentence. On the other hand, one might write, 'Congratulations on (for example) your amazing achievement.' Likewise, it might be appropriate to write, 'Welcome to (for example) the North Podunkville Community Association.' The formal rules of punctuation and grammar are usually relaxed in such circumstances. Otherwise, just follow the normal rules of punctuation and employ a comma whenever and wherever it is appropriate or necessary to do so.
Tagalog translation of CONGRATULATIONS ON YOUR NEW BABY: Binabati kita sa bago mong anak.
Congratulations on your beautiful baby daughter!
How do you say congratulations on the new baby in polish?
There are many ways to say congratulations to a nephew. A person can give their nephew a card or gift, or they can throw a party with balloons and streamers that say congratulations.
Tagalog Translation of CONGRATULATIONS ON THE NEW BABY: Kongrats sa bago mong anak.
Congratulations!
No because it is not a proper nou n.
Congratulations new grandparents!
Felicitaciones sobre su/tu/vuestra nueva casa