Your problem could be anything; from not getting a function to work, to be needing help with  a full new project.  I can help.

You may know what you want, but you haven't time to develop it yourself.  Let me help.

You have a nice sheet, but you like to make it a bit more user friendly or generally more robust.  I can help.

There is very little downside, you don't pay unless you are satisfied, and then only what you want. Never as much as it is worth.  No risk trying.