Exchange or wallet?

From an exchange

• Choose Withdraw, not Send to a friend or Pay
• Pick the coin and the exact network on the invoice
• Some exchanges deduct the withdrawal fee from the amount. Add it, so the invoice receives the full sum
• Withdrawals can wait for an exchange security check; leave time before the invoice expires

From your own wallet

• You choose the fee and the transfer leaves at once
• The exchange that sold you the coins can still see it went to your wallet, but not what you did next
• Scan the QR code or paste the address; never type it by hand