I can't do the lip trills at all.

What should I do.

I need  help singing 

I can do a lip trill for maybe a second, frustrating - then I tried just softly touching my cheeks with middle finger and thumb - then the trills work perfectly!? So, it's face muscle related? I can't explain it :-) 

Great tip, Vivanoff! Here's an article with some more advice and lip trill alternatives as well: https://www.30daysinger.com/blog/lip-trills-all-about-the-vocal-exercise. 

Dear Camille:
Wow, 
you really got a broad range of stuff covered! And now I know that there is a blog on the site :-) (I found my solution just by fooling around). Thanks a lot! Vladimir

Yes, lots of good articles there! Hey, lots of stuff can be figured out just by fooling around. When singing practice feels like play, that's a good thing :)

 Thanks so much Vivanoff and Camille, I got the buzz happening :) 

I'm glad I found this because I really feel there is something wrong with me because I can't do them. I've wondered if it was because I have fuller lips.

 I'm going to read the article and try some of the tips. I'll report soon. Wish we luck!!

Nice job, Karen!

And Tara, I have some private students who just don't love the lip trill. Anything semi-closed (mentioned in the article linked above) is a great substitute!