Pick one the second image is an example! xdis the last image correct

No, the last electron is the down facing electron in the 3p subshell.

the shells are filled in the following order (for this example):

s subshell, then p subshell.

but the electrons will fill out the boxes in the p subshell one by one until the are no empty spaces. then it will fill the boxes in the p subshell in the opposite direction until all the boxes have 2 electrons