You're welcome!
The best advice I can give you is practice, as cheesy as it sounds.
I'm not an expert at photoshop, but what I've learnt about creating other art as-well is that practice really does help. I've gone from creating little pixel emotes to doing a fairly large pixel drawing.
Sure, it took me two days to complete, but it was worth it!
Also, patience...something I don't have! You need alot of patience with your work.
As for Comments, I'd say that your work is high quality. I love the style that you use ^^