Hi,
I've looked at your pics, and i think you have the basis to be really good,
just a few pointers from me if it helps?
1st i think you are trying to do too much.
Eg. patterns, free hand, decals, funky colours.
Why not try to start from scratch on a new 10 man unit with a view to simplicity, spend some time choosing a simple colour scheme, blue and yellow, white and red etc.
Then prep all the models, and use a fine spray of skull white,
One thing i would say is that it looks like you are using far too much paint.
So start your base coats with watered down paints, aim for thin coats, solid colours, and good neat detailed coverage.
Even limit yourself to a few colours, eg. blue, yellow, silver armour and leather, and skin
when you have finished basecoating, use babab black mixed with water to wash the model,
then work some relevant washes into the base colours when its dry, eg. asurmen blue wash for the blue colour, or green wash if you choose green colour etc,
then when all is dry, start highlighting,
your chaps in the black/green/yellow look like you have highlighted by dry brushing goblin green?
try to avoid dry brushing all together, in my opinion it isn't a beneficial technique apart from in certain rare circumstances.
to highlight use the base colour, and layer in a highlight, so blue + lighter blue, then certain lines or raised creases can be touched with almos white,
I would love to see the result of you aiming for a unit of 10 troops, and painting as basically as you can,
I bet you £50 they look very very good,