[coinerone]

Learning the correct pronunciation of "th" was tough though. :)

[turbinerneiter]

I can do it on individual words, but as soon as I speak in full sentences and with speed, it comes out however it wants.

Though and tough aren't a problem though, "thinking" in the middle of a sentence is real tough though.

[advanced-DnD]

1. Push your tongue against your upper inner-teeth.

2. Let out all the air out until your tongue separates said teeth

[euroderf]

Try the "ll" sound in Welsh. Sounds way cool.