add button to move data to another sheet

Hi ive created a small invoice system which ive somehow managed to get it pulling customers from a list – i would now like it so when the user completes the invoice sheet and clicks a button it sends the Customer name, date, invoice number and prices to the other worksheet and clears the form. See below

Invoice (Worksheet1) InvoiceList(Worksheet2)
C4 to A2
C5 to B2
C7 to C2
C9 to D2
F31 to E2
F32 to F2
F33 to G2

It would also need to check which was the next availble row free so for the example its 2 but next time would be 3, then 4, etc.

Any pointers in the right direction would be great! Thanks