I want to exclude the last 3 worksheets from the following macro. Can you
please show how the code should be adjusted (and cleaned up). Many thanks.

Sub Sheetsless3()
Dim wSht As Worksheet
Dim myRng As Range
Dim allwShts As Sheets
Set allwShts = Worksheets
For Each wSht In allwShts
wSht.Columns(1).ColumnWidth = 51.57
wSht.Columns(2).ColumnWidth = 8
Set myRng = wSht.Range("C4:N4")
With myRng
.HorizontalAlignment = xlRight
.VerticalAlignment = xlTop
End With
Next wSht
End Sub