Hiee dear
Completely understand ur concern.
Firstly stop worrying about pimple it will subside n u will get clear skin
Few tips
1. Make sure u don't have dandruff
2. Do not use too hot or cold water for washing face.
3.apply sunscreen regularly.
4. Depending on ur skin type use moisturizer
5.DIET.. add green leafy vegetables, salads,bitter guard ,ridge guard carrot, capsicum,cucumber etc.
6.drink plenty of water each day.
7.scrub ur face once a month to remove dead tissues.
8. Use curd to keep skin hydrated
9.do not use any kind of chemical bleach
Next Steps
there are many more tips which I personally follow as well
to know more consult online