Audrey,
the mnemonic of ‘my very educated easy method just speeds up naming planets’ is great for the order from the Sun, but if you have started with the order of size, then you would use:
My method very educated naming up speeds just! ( I left out dwarf planet Pluto).
Would you look at drawing the orbits even slightly to scale, or just as circles?
There are scale solar system details in this resource from spaceweek.ie:
https://www.spaceweek.ie/wp-content/uploads/2020/08/Solar-System-Walk.pdf