Activities Pleasing Krishna

In Bhagavad Gita 12th chapter Lord Krishna describes what is pleasing to Him very much.
We find largely as qualities and activities which pleases Him
Quality is a symptom of knowledge. Offer a fruit, flower with love.
How to know am I offering with Love? Maharaj says Everyone knows what love is and what sincerity is by referring Srila Prabhupad’s statement.
Is there some other personal intention or am I doing for Krishna Pleasure?