Bismillahir Rahman nir Raheem,
Mustaqimatul signs: The zodiac signs that are known as the Mustaqimatul signs include: Cancer, Leo, Virgo, Libra, Scorpio and Sagittarius. If a positive amal is to be performed then the best results will be obtained if it is done under the mustaqimatul zodiac sign. If the planetary aspects/drishti is positive then the amal will become even more effective.
On the contrary if the Mustaqimatul signs have negative planetary aspects/nazar then the amal will not be successful.
Maojatul signs: The zodiac signs that are known as the Maojatul signs include: Aries, Taurus, Gemini, Capricorn, Aquarius and Pisces. Under these signs the negative amals of destruction, enmity etc can be done successfully. If these signs have negative planetary aspects or nazar then the work gets done more effectively. On the contrary if the Maojatul signs have positive planetary aspects/nazar then the amal will not be successful. If somebody happens to perform a positive amal under these signs then the amal will get nullified.
Keep Me In Your Prayers