If you have good knowledge of words and know-how and where to use them, then you are ready to write one. But to write Love Shayari, you need to create one. So you must bring out your emotions, feeling about that specific thing that you are thinking of. Write it down immediately and don't care about anything or anyone, just write it down. This way you can create Shayari.
There are many types of poetry which we get from history and which are very popular today as well. In the poetry types we can find that romantic poetry is the most popular one. Romantic poet has great preference throughout the past as well as today as compared to other poetry types. Other poetry types include sad poetry and love poetry. Poetry is the way to express sentiments so poetry types are also as much as the feelings of people. Love is the eternal feeling that can never fade away and it is one of the strongest human sentiments. Urdu Poetry which is deeply immersed in love is appreciated by the people who themselves have strong emotions of love. If you are in the mood to read poetry on love then you can read the poetry by famous poets like Mirza Ghalib, Mir Taqi Mir, and Mir Dard. They are the famous Urdu Poets of the past who are very popular today as well. In past, poets used to write Love Shayari on social issues such as poverty and slavery. Moreover, other than social issue they have been writing on cultural issues as well.