Mm,I have a tip for your languages learning issue.
You become fluent much easier in a language if you speak it.
Let's say you want to learn spanish. You have no friend to talk it with,but hey..There is the internet. You will get conversational skills if you get involved on a spanish web page. As for the speaking part,just talk to yourself in the mirror,or watch movies in that certain language,or listen to music.
You will be amased how easily you will get them this way.
As for the good grades,study is always the 100% sure way to get them.
As already discussed on a forum thread,skin problems have another solution than magik. A dermatologist is the best person to look for advice from. We all have differebt skin types and reactions to certain factors,so no such wonder-cream that will work for anybody will be created any soon.
There are spells on this site for your requests,but note two things:
-the effects are rather small
-spells don't work for those that do not have quite a lot of magik training behind them. Spells casting before learning the basics always has terrible "after effects".