Usually, when we experience something like you did, it is God getting involved in our lives in a supernatural way, usually to confirm something but also for impartation purposes. It is important to understand how Jesus chose to “appear” to us every time that it happens. In this case, He chose to emphasize the following: A blue and white robe. This speaks of Him being prepared for life and ministry with righteousness, victory, purity, and holiness (white) and a symbol of Heaven and the divine authority and the revelation of the Holy Spirit or revelation knowledge (blue).
He smiled at you and that symbolizes favor. He is for you. You also experienced his love and peace.
He also chose to appear to you next to a river: A river speaks of a huge or abundant flow of financial provision and/or spiritual blessings.
He also chose to reveal to you that you have been called and chosen for something specific, usually in the spiritual areas that were displayed in the dream (blue and white clothes, the river, love, peace, favor).
The elevated pedestal symbolizes you being promoted and set aside and the hand on your head was an impartation that literally happened. You were literally anointed for this special calling.
The slowly floating up to heaven is probably the result of all this. You will, over time, get filled with heavenly “things” and your relationship with Christ will become more and more intimate and heavenly and divine. It means that you will experience more of heaven as time passes.
This was a divine impartation and an anointing dream. It means that He gave you everything that all the symbols represent. It is yours and it will cause spiritual growth and development.