[![enter image description here](https://i.stack.imgur.com/TTvMy.png)](https://i.stack.imgur.com/TTvMy.png)

I started this piece around 2 days ago for my grade 8 piano exam and I've been having a nightmare with the beginning section(red circles). I can play the rest of the piece with no problem but the beginning keeps giving me a headache. When I try playing with both hands my right hand keeps failing. I just don't understand why I can't play it.. I've played much more technically demanding pieces and my teacher even told me that this was a relatively easy piece.