Hello marz.steemit I just did a trial myself so I could tell you how its done .
step 1. login to your bittrex acc and go to wallet then click the - minus and a window will pop up it will say
memo
Registered Acct
Quantity
Tx Fee
Withdrawal
Step 2. go to your wallet here on steemit then click on permissions and copy the one that says memo make sure you copy all of it , it is 53 characters long then paste it where it says memo on your bittrex wallet
Step 3. On bittrex where it says Registered Acct this is where your steemit name goes (DO NOT USE @ and DO NOT USE CAPITAL LETTERS ) your name should look like this marz.steemit
Step 4. On bitrex where it says Quantity enter the amount of steem you wish to transfer
Step 5. Bittrex will send you an e-mail to comfirm
NOTE: I would only do a small amount to test say like 0.05 also note: you must send more than 0.01 because that is the fee to send, just be sure you have all information correct
Step 6. Follow @me-tarzan here on steemit
hope this helps.