I'm hoping someone will have some guidance for me. After 300-400 hands here are my numbers:

I see 30% of the flops
I stay to completion 17% of the time
I win 44% when I see the flop
I win 14% of all hands (avg 8 player games)
I win 57% of showdowns

I am slightly ahead in dollars.

Do I stay too often, not enough, is my winning too low, showdown % good or bad?

Any help is appreciated.

Your stats are similar to mine. I see between 25 and 40 percent, it is usually a lower percentage if I win bigger pots. Of those that I see I finish in the money if I have won half of those, and I guess that is what you are after. If you are happy with what you are doing, just look to pick up on things that you feel you are week at. For me it was playing against maniacs and I have somewhat turned the corner. 400 hands is not a lot, if you are at 4000 and have the same results, then you are probably going to be ahead of the game.

play more than 300-400 hands

your replies are appreciated. I have in fact played maybe 3 times that number of hands online, but obviously that's not enough, to be sure.