spreadsheetmanship
Of, or pertaining to the level of skill and talent one posesses in regards to creating, editing, and formatting spreadsheets. Generally, someone with good spreadsheetmanship will employ effective colors combinations, fonts, and cell spacing to create a readable, functioning spreadsheet.
"Her spreasheet was easy to read and understand due to her excellent spreadsheetmanship."
"His spreadsheetmanship sucks. The colors were awful, and the cells were too small."
"His spreadsheetmanship sucks. The colors were awful, and the cells were too small."