Find Largest Value In A Column

I am trying to write a macro in order to find the largest value in a column in one worksheet, and copy and paste that value into a different workbook. I have found a code similar to what I am looking for and tweaked it, but it needs a few more adjustments. The code below opens the file I want it to, and pastes data into the correct workbook and worksheet, but I would like it to be able to paste in the next empty cell in Row 3, instead of just in the cell "C3". Also i would like for the program to find the largest numeric value in column C, instead of using an if last row statement, as this current program does not always give me the output I am looking for.

VB:

Dim wsMaster As Worksheet, wbDATA As Workbook
Dim NextRow As Long, LastRow As Long

Set wsMaster = ThisWorkbook.Sheets("Contract Metrics")
NextRow = wsMaster.Range("A" & Rows.Count).End(xlUp).Row + 1

[Code] .....