IMovie Not allowing me to export my movie! Please help

Hello, so yesterday i recorded a Minecraft video with ScreenFlow 5 Demo, then i put it in iMovie 09 to get rid of the watermark. I Put It in IMovie 09 by doing

File~>Import~>Movie and selecting my .Mp4 video file. Before all of this, i used the Pre-built ScreenFlow 5 Demo editor to make the video a little less than 1/4 the size of the original video. After putting it into IMovie 09 i selected "Crop and Rotation" from Right-Clicking. I Cropped it a little more by making it smaller. Then i clicked "Done", and it made the video how i wanted it. I clicked on "Share", and to my surprise, all the options were not clickable. Please help! I use MAC OS X 10.10.5 Yosemite, i have a MacBook Pro 17-inch Mid 2009, and please help!