Hello Sally , You could also say : " I became proficient in the --- following skills". " I have mastered many aspects of ----- "

You can say "I possess several skills." or "I've mastered several skills."

Once more, using Google to translate: 我是想表达：“我有掌握一些不同的技能，像玉石雕刻、陶艺制作、琉璃制作等等” The following is returned: I would like to express: "I have to master a number of different skills, such as jade carving, pottery making, glass making, etc." I often use this Google Language Tool and have been able to conduct an on-line chat session in Chinese with very little knowledge of the language. Sometimes the structure of the translation has to be altered but one can usually work out the meaning. I would consider the structure of the above translation to be quite acceptable.