Well first of all I don't know if lwk is ur crew or ur name but it might already be a well known crew. Those tags u posted are bad, and you shouldn't worry about making it more "graffiti" like. Instead just start of with the very basic letters like on ur keyboard, lower case etc. Simplicity always comes first, if you try to avoid it ur graff will look like complete shit.
Also I see that on the second pic u posted u tried to connect the l and the w, which is cool but if you wanna rock a one liner make sure that all the letters connect whilst keeping it simple. peace