How to loosen up my game?

[Sanzarc]

I've been playing poker on the internet for 15 months now, I usually play 3k hands/month.
I have about 33k hands from 1/2 to 3/6$ limits in my PT database and I'd like to get some help, because my stats are not as good as they should be I think.
So here are some stats from the database
Total hands: 32610
VP$IP: 13.71%
Att. to steal blind: 19.87%
Went to SD: 30.60%
Won at SD: 60.00%
PF raise: 7.00%
Flop, turn, river AF: 2.30 , 2.75 , 1.93
Total AF: 2.33
BB/100: 0.89

My main problems are the low VP$IP, the low river AF and of course, the amount I win (BB/100).
Do you have any idea about how I could improve my game?
Should I play hands like QJo in middle position?
I hope someone will help me with it.