As a beginner - I use my right (dominant) hand to lift cards from my left hand in blocks. I start by just lifting a clump of cards, and they go in clumps into my left hand, nearer to me than the cards already in my left hand.
Then I realise that many cards are staying next to their neighbour, and I loosen my left hand and use my right hand to gently work the cards I hold in my right hand into the other cards so that they are interleaved. I never feel happy that I do this satisfactorily.
After a bit I go back to shifting clumps of cards, then I cut the pack into three and pick up the third part first, to use for the reading.
If it sounds clumsy - it is
But I am getting better at it.
I hope this answers what you were asking,