Ok, that makes it more difficult. For /ü/ make the sound "ooh" and then push your lips forward. For the /r/ try saying /tülkiye/ with /l/ and then note where your tongue hits the roof of your mouth. Say it again and move your tongue back a bit. That's the best I can do with a written description, you could also try listening to the song "Ölürüm Türkiyem" on YouTube ... Yaren Doğan has a fun version.