Well, sheet music is written (and read) left to right. Notes have heads and stems (aside from whole notes, that is) that are appended to the right of the heads if they go up. For notes that are written with their stems down, you simply rotate them 180 degrees, so the stems end up on the left side.
For deciding when a stem goes up or down, a simple rule is the note B (which is written on the middle line of the staff). It can usually be written with the stem going in either direction. Notes that are below it have their stems go up; notes that are above it have their stems go down.
Dots (which simply extend a note’s duration by half) are also written to the right of the notes.
So, as an example of one of the note groups you have in that screen (a dotted quarter note, followed by a quarter note, followed by a half note), here’s what it should look like:
The same goes for the pictogram in the bottom left.