What can I do to repent after having drawn portraits?

Assalamualaikum, I have been drawing various things (portraits, sceneries etc) for a long time and sometimes I was told by people that it is sinful, though I didn't get any exact ruling on it. I drew portraits as a stress-reliever. Recently I have learned about the ruling on drawing portraits and have stopped drawing them. I have covered the portraits with ink. But I also gave some drawings to other people in both paper and online medium. What can I do for those images? Also I want to know how to repent for it, since I feel very scared after hearing the rulings. Is there any way it can be forgiven if I repent now? I really want to make up for my long-time mistake and want Allah's forgiveness.