To be honest, I think you're getting too caught up in photoshop techniques when you really shouldn't be worrying about that too much. Don't worry about making "finished" pieces, just keep sketching and learning. Your anatomy needs work, and really the only way to improve is to keep drawing. If I were you, I'd shelf photoshop for a while, get a sketchbook, and fill it up.

http://entervoid.com/index.php?board=25.0

There are a ton of resources in here about various stuff, including anatomy!

i really want to T^T.......i just cant afford the sketchbooks and pencils T^T.

aaaand done.....ok i really love how this came out

now number 4

hello......ok sooooo there is a good chance i might forget to post some of my stuff here lol. tbh i might even forget i have this lol. but imma try and post some things here to show my main skill. if my art sucks then i have the perfect excuse.......i suck and need to get better lol. sorry i tend to let my art and actions talk more so then my words. plus i havent had coffee in days. i sadly dont have as much time as i used to in order to make personal artwork. most of the time im in commercial art class or working. also if it looks my quality jumps.....i have to set ups. one at school is far better and more stable then my home set up. no excuse but a warning.
but here is my more recent pic

wow i really need to redraw his arm. might ask someone to pose for me to be my ref

pleasepleaseplease forgive the quality. lots been going on. i am sooooo sorry. i did promise id show something. this is a sketch of what ive got. im sorry.

hey everyone I'm James. though i guess in the art world I'm known as shadowman on fa and infernomanzzoom on DA. I'm wishing to become a manga/comic creator. i love drawing and telling stories to entertain people. ummmm sorry I'm not very good at introducing myself. Ive always had my actions and art talk for me. lol. right now I'm in a commercial art tech collage and was gonna go to another collage but by asking around Ive learned that might not be the best idea. I'm hoping going here might help me.
tbh Ive never heard of this place till a while ago when Sugerpunch showed it to me when i asked for help on my own comic. btw thanks of you ever read this lol.
I'm hoping that joining this site might help me become even better at my art and getting my skill well enough to do comics and manga as a job.