Mrigshira - Mrigshira is nakshatra of desire oriented people. Someone who is keep searching for his next desire satisfaction. It is a nakshatra of disguise too. It is also related with Spying or Stalking and travelling. Please read this to get detailed info about Mrigshira - https://www.astrosaxena.com/mrig.

Taurus - As Mrigshira is part of Taurus, Taurus sign and its representations become important here. Taurus is the 2nd sign of zodiac belt, so it represents many things related with 2nd house of horoscope like, Hoarded Wealth, Assets, Savings, Finances, Luxuries and Liquid Money. All in all a sign related with luxuries and all the conveniences of life. Taurus is consisted of 2 and half Nakshatras, i.e. Krittika, Rohini and Mrigshira. Taurus' lord is Venus.

Gemini - As Mrigshira is also a part of Gemini, Gemini sign and its representations become important here. Gemini is the 3rd sign of zodiac belt, so it represents many things related with 3rd house of horoscope like, Communication Skills (either written, oral or even by sign language), Marketing, Business etc. It is a sign basically related with communications and business ideas. Gemini is divided into 2 and half nakshatra of Mrigashira, Ardra and Punarvasu. Gemini's lord is Mercury, which is significator of Communications.

Venus – As Venus rules Taurus, Venus’ position and dignity is important to know about the overall functioning of any planet in Mrigshira/Taurus.

Mercury - As Mercury rules Gemini, Mercury’s position and dignity is important to know about the overall functioning of any planet in Mrigshira/Gemini.

Mars - As Mrigshira is ruled by Mars, Mars's position and dignity will also have an important role in functioning and results of any planet in Mrigshira.

Houses Involved – Also, we can’t afford to forget the houses involved as a planet can be ruling different houses and sitting in different house for every person as per ascendant and planet’s position. To know overall affect, we have to consider the houses involved as those areas of life are being impacted.

Interpretation of Venus in Mrigshira Nakshatra – When Venus is in Mrigshira Nakshatra, it is in neutral nakshatra as its lord Mars is neutral towards Venus. At the same time, Venus remains in own sign in Taurus and in friendly sign in Gemini as it is ruled by Mercury. So, we can say that Venus is in very good dignity in this nakshatra. As always, this position of Venus can also be interpreted in two ways. Venus in Mrigshira/Taurus will show someone who is dealing with properties, real estate and wealth related matters. It is because Mars is ruler of Mrigshira and it represents real estate and Taurus is anyways sign of wealth and assets. So, they can be seen as wealth managers, bankers etc in Taurus section of Mrigshira. They themselves can have good property and wealth. They can also be teachers in finance related education, as Venus is also one of the teachers in mythology. In Gemini section of Mrigshira, they can be more involved into research oriented work as Mrigshira and Gemini both are information oriented. They can have a love towards research. This position can make them more sexual too due to the story of Mrigshira and symbolism of Gemini. Best work with Venus in Mrigshira/Gemini can be of a teacher or counsellor in financial matters or any other research oriented field as they can have lots of information about many different fields. They can also work as spies or detectives. They can also be very creative with arts and music etc. They can be very good at acting, disguising, mimicry and also at fooling others.

Mrigshira Nakshatra is related with spying or stalking etc. So, in relationship matters, it can represent that person himself or his partner can be very insecure one and may keep doubts in relationship. In also suggests huge age gap between partners. In worst case scenario, this position can indicate towards possibility of incest in relationship.

Role of Venus – As we are trying to interpret Venus only, there is no need to look at Venus’ position separately.  

Role of Mercury – Mercury's position will become important in functioning and results of Venus in Mrigshira/Gemini as Mercury rules Gemini. If Mercury is in good dignity then Venus will have proper direction.

Role of Mars - Mars's position will also become important in functioning and results of Venus in Mrigshira as Mars rules Mrigshira. If Mars is in good dignity then Venus will have proper direction.

Other Factors – And of course, we need to consider conjunction, aspects, house lordship, house position and dashas etc to know the exact results of Venus in Mrigshira. So, we always need to take a holistic view of chart rather than just 1 planetary position.

Conclusion – So, this is how I see Venus in Mrigshira can work in a chart.