-ed or -ing?

Jack's mum was very worried when he didn't come home.
I fell off my bike. It was so embarrassing! (I was so embarrassed.) 
I felt very frightened the first time I tried parachuting. (It was very frightening.)
Spain is a very interesting country. We often go there on holiday.
Cathy is annoyed because someone stole her bike. (Having her bike stolen is annoying.)
I don't like tests. They're boring.(!)

Hello Viktor,

I think you almost have it.. The -ed adjective is how you/somebody feels and the -ing adjective is the thing/activity/person that makes you feel that way.

Hope this helps

Bob