I miss this girl and i want to win her back?

Me and Amanda were both sophomores when we met, we sorta jumped into liking eachother i would say. we knew eachother for about a week when everything went wrong. first couple days we were talking back and forth on how cute we both were, (werent dating) and she asked me one time to join her at her house for a movie. on movie night rather earlier that day , i decided to buy a Corona shirt, which later i realized was a bad idea to wear a beer logo shirt to a date at her house with her parents, and because i heard a rumor that corona uses piss in their beer(later burned the shirt). The movie was at 7 so i had the whole day to myself with my friend at the beach. i had no money but he had money so he wanted to get a couple beers. we both got 2 and i drank mine swiftly as he slowed his first down. i spilled some on my shirt a little bit. and then when 6:30 came around we headed off for him to drop me off at my dates house. The night was good "i think" for what circumstance i was facing. it was her parents, her, me and her friend. Which they were both texting eachother back and forth nonstop. The movie we watched was Eagle Eye and the opportune moment i chose to kiss her was when the explosions happen, i wasnt paying attention to the movie visually as i was more like hearing it. the first kiss was kind of a peck but thats just me. we kissed 2 more times after that real kisses 1 when after the movie and 1 before i left. later that night before i left i asked if we could hangout the next day, she said she was busy and i was ok with that. she later texts me like im sorry, nick i dont see anything and you smelled like beer. i was struck by lightning then i had no idea how to answer but i said like it was because someone spilled beer on me and after that night nothing was ever the same. At school she wouldn't look at me or talk to me. but its been almost a year now and she looks at me when im nearby all the time. but i just feel that i messed up so bad earlier in my life that she wont give me another chance. i really saw something with this girl and i truly like her, i know all you are probably thinking like, this highschooler doesnt know who he likes and who he doesnt. Oh, i know. theres 1600 kids approx. in my school and when you like 5-10 girls ya. thats what the deal is. by far she was my best ive ever had, and guys i know where i messed up. im just trying to win her back. shes a trophy for me.