As this game was designed to be used in your sleep I realized, as I tried to use my phone with my eyes half-opened, that having two rows was just going to cause confusion so I pared it down to one row.

I placed it in the centre because that would be the most comfortable area for the user. I also made the buttons larger to compensate for sleepy fumbling.

I also ended up adding a little bit of gradiant at the bottom to make the cancel and select buttons clearer while also making sure the user can see that there are more slots they could pick from.