All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
After completing your ‘Iddah (waiting period) everything that is lawful for any ordinary woman becomes lawful for you. Therefore, you may adorn yourself, use perfumes (when you are at home) and may go outside fulfilling the rulings of Islamic Sharee’ah. Also, you may marry a suitable man if you wish.
There is no evidence proving that a woman has to carry out any special prayer or fast after completing her ‘Iddah.
Allah knows best.