A Bad tThing

This sounds more natural for a title in the US.

Today my good friend came to my home for pleasureto keep me company.

or, even better:

Today my good friend came to my home.

I woulhad planned to do my homework this afternoon, but I also planned to playspend time with her.

We plannyed with her all thisgames all afternoon .

I felt ashamed, because I didn't do any homework all afternoon.

Bad tThing

Titles should be captalized for every word (general rule, but there are exceptions).

Today, my good friend [came to my home for pleasure]/[came over] to hang out.

A more natural way of saying "came to my home" is "came over." To say come over for pleasure, you can say "to play" or more naturally, "to hang out."

I wasThis made me very happy.

I think saying it this way connects it better to the previous sentence. Because your friend came over to hang out, you were very happy as a result.

I would planned to do my homework this afternoon, but I also had planneds to play with her.

We planned with ended up playing together all this afternoon .

"Planned" does not make sense here, did you mean "play?" "Ended up" shows that you regret doing this since you wanted to do homework too. You don't need "this" between "all" and "afternoon."

I felt ashamed, because I didn't do any homework all afternoon.

See, over here you didn't need to use "this" between "all" and "afternoon."