Your bleach drawing and first dragon drawing is really bad, and I have no idea why your drawings differ so much in terms of skill level but make it stop! :P. You should get some good paper and pencils, drawing with a regular pencil on a grid paper just hurts my eyes.
your shading is pretty average ....
you draw on graph paper, so use the squares to help you.
also, keep your pencil sharp, sharpen it often, if your pencil isnt sharp, your lines automatically look shitty.
and invest in a 2b and 4b pencil, what paper you use is up to you, but you need better pencils.
Some more: