From what I can tell, 如何 and 什么 are generally not used in the same circumstances. 1."I learned how to communicate with peoples of different cultures, from different countries." 我学到了 如何与不同国家不同文化的人们沟通。 Here 如何 can mean "the way to deal with" or "how to deal with" another example，我该如何面对这次挑战？(equals "我该怎么面对这次挑战？"，whereas ”怎么" is relatively informal and usually used in oral, 比如说，"又堵车了！我该怎么办？”) 2. What do you think of Ang Lee's new film "Life of Pi"? （1）你认为李安的新电影《少年PI的奇幻漂流》如何啊？ （2）你认为李安的新电影《少年PI的奇幻漂流》怎么样啊？ Both of them above express the same purpose to ask your views about the moive. (1) What about going out for lunch? 出去吃顿午饭如何？or 午饭出去吃怎么样？. Either is OK. Thus， "如何"and "怎么样" can also be uses as simple proposals. 3. 什么 is normally used when you want to ask about a spacific matter, ie "你在做什么呢？" "发生什么事情了？" what happened to you? "到底是什么在拖你后腿？”What is hindering you on earth? 4. in some ways，"what‘s the matter with you?" can be translated as "你怎么了？" rather than"你什么事情了？”. 有时候也可以理解成“你出什么事了？” I wish these would help.

Generally, "如何“=”how to (do) sth" in English. But in sppken Chinese, we usually don't say "如何“ a lot, in stead of using "怎么” or something else. “ 如何" is mostly used when you are writing articles.

just like yuki said ,"如何"="how to do sth"in English ,in addition ,"如何"has another use ,for example ,我觉得这件衣服很漂亮，你觉得如何(怎么样）？in this sentence ,"如何"means to ask somebody for advice .i hope i can help you

如何 = how How to use how? You know it!!!!!!!!!!!!!!!! BTW your sentence is PERFECT!!!!!!!!!!! And there is another way to use 如何 means: What do you think? 我们去看电影吧, 如何? Lets go for a movie, what do you think? kinda like that~~

如何 = how the question for quality or the way of doing