Try to make silly memory associations for yourself
HOW TO WRITE IT [Follow the red strokes from left to right]
ROMAJI - se SOUND - [as in SAY] 13 k wav
MEMORY: It looks like someone wearing a hat SAying something
HOW TO
WRITE IT 
- This means 'sweat'
- This means 'chair' or
'seat' (another
word for seat is isu)