You’re getting better at this. Still, I hope you don’t mind if I point a few things out. In the first sentence, when you say it like that - "приятелката", it sounds more like “Melissa is my girlfriend”, because it implies that there’s only one of her. It should be “Мелиса е моя приятелка” or “Мелиса ми е приятелка”. However, you can specify something like „Мелиса е приятелката (ми), за която ще ви пиша” – As in she’s the friend I’m going to write about. In such a case the „-та” is correct. Also, in Bulgarian it’s Сан Франциско, with a ц. And „добъра” should be „добра” – it's one of the words where the „ъ” or "е" near the end in the masculine is dropped in the feminine, neuter and plural. Words like добър - добра, зъл - зла, кръгъл - кръгла, топъл - топла, пълен - пълна, горен - горна... Like you did with the eyebrows: тънък - тънки.
And again, keep at it, you’re doing great. :)