Am I pronouncing らりるれろ properly?

[Rachael]

I uploaded a sound clip of me pronouncing this hiragana line twice. I'd appreciate a native Japanese speakers input, thank you.

Vocaroo | Voice message

 

[Toritoribe]

Your r's are rolled too much.

 

[Rachael]

Your r's are rolled too much.

Thank you very much for your prompt reply. I'll continue practicing until I can perfect the sound.

 

[Rachael]

Hello, am I still rolling my r's too much?

Vocaroo | Voice message

 

[Toritoribe]

Sorry to say, yes.

http://upload.wikimedia.org/wikipedia/commons/4/4f/Ra_(Japanese).ogg
http://upload.wikimedia.org/wikipedia/commons/b/ba/Ri_(Japanese).ogg
http://upload.wikimedia.org/wikipedia/commons/9/90/Ru_(Japanese).ogg
http://upload.wikimedia.org/wikipedia/commons/2/28/Re_(Japanese).ogg
http://upload.wikimedia.org/wikipedia/commons/6/68/Ro_(Japanese).ogg

How about to say actual words that contain "r"? The pronunciation of "r" is a bit different depending on the vowel following it or the position in the word("ra, ru, re, ro" vs "ri" or "at the begining of the word, after n" vs "in the middle or at the end of the word").

 

[nahadef]

I haven't listened, but the way I learned to do it was this:
Place the tongue in the d-position in your mouth, and from there make an r sound. It should have a flick to it. The English r can be extended (rrrrrrrr) but the Japanese r is more percussive.