Air_canada, you provided very helpful and descriptive information. Thanks very much!!
air_canada said:B4 is form for your "goods in possession" and since you are only carrying clothes means you are not "importing" anything at this time and will have 100% items on B4A ( Goods to follow ).
However , even though you are not importing cars at this time and may plan to do later , you 'll have to fill in VIN # on B4 Form because thats the only place in 2 forms where you can write about them. Leave the remaining form blank except address , name etc.
you 'll not be able to find writable / editable B4/B4A pdf forms on Canadian Customs web sites . Try using adobe writer software ( infact adobe photoshop also works well ) to type and print your data instead of excel.
make 2 copies of each
also at the end you have to calculate the gross amount.
if you handover excel sheets , customs offier will start copying / may ask you to copy these items on B4/B4A forms - so save each others time by producing printouts on proper forms.