Depends on what emotions and when , avoid crying or looking afraid or weak in front of women as much as you can, unless you really really have to show such emotions .
As a cool and laid back guy i dont show much emotions, most of the time iam just like "meh" and a lot of girls while admitted that sometimes they find it kinda irrititating that iam not so emotional on the other hand its actually hot, one girl told me once "youre not phased by girls looks, you take one look and act like nothing happend, unlike most other guys who get so worked up" .
I think the kind of emotions women want from men are passion, such as showing her how passionate about her when with her, looking in her eyes and telling her "youre my world" kind of ****, without being a doormat at the same time, maintain your frame, and look like a guy that doesnt get easily emotional so when you do get emotional and share your emotions it means the situation is really important for you and it required a rare reaction from you, a lot of girls say that bad boys are *******s but so emotional with them, what they mean is that badboys (or more accuaretly certain guys with certain traits) are cool and dont show lots of emotions so when they do its actually important .