You should click "File" >"New" > "Project".
A pop up "New Project" will appear.
Click "Xilinx" > "Application Project".
A new pop up "New Project Application Project" will appear.
You should set the value of parameters as in the image below.
After this clik "Finish".
A new pop-up "New Project Templates" will appear.
In this case select "Empty Apllication" under "Available Templates".
Click "Finish".
A new "Application Project" named "demo" will be created in the "Project Explorer".
Now you should click "Project" > "Properties". A pop-up "Properties for demo" will appear. Now you should select "Project References".
Now you should assure that "reference-TE0300_hw_platform" and "standalon_bsp_0" are both checked; if their box are not already checked, you should check them now;
Now the contents of "Project Explorer" should be this one below.
Now you should copy the contents of the original demo (all .c and .h files from "TE0xxx-Reference-Designs\reference-TE0xxx\SDK\SDK_Workspace\demo\src" already moved in the temporary folder "C:\demo_src_TE") inside the folder "C:\XilinxProject\reference-TE0xxx\SDK\SDK_Workspace\demo\scr" as already do in the figure below.
After the "Refresh" operation the .h and .c files should appear in "Project Explorer" under "demp\src".