One of the glorious things about our RP community is that they used lots of different RP styles. If you are more comfortable with short reply RPs you are more than welcome to look for partners who will respond similarly.

One thing I might suggest is to look for someone who gauges how large their post is to how much you give them. When they make a large response look to see at what kind of details they've added to beef up their post-- setting, clothing, emotion, thoughts... these sorts of things-- in order to add them to your own.