我只是看起来很专业，其实我是菜鸟一个 用英语怎么说

Answer 1

I only LOOK very professional, but i'm actually a rookie.

大写是强调，书面可以斜体，念出来要念的重一点。

Answer 2

It looks like I am a professional. Actually, I am just a beginner.

Answer 3

I look like a proffessional.In fact I am a fresh hand.