Fine....
ü is sorta like saying "u" (like the "oo" in "food") and the "e" in "me" at the same time. Sorta shape your lips like the "u" but your tongue like the "e." That's tthe best I can explain it. Also, the "h" in "th" in German is silent. There is no "th" sound in German like Enlgish. There is "sh" and "ch" though: "sch" and "tsch." They both made more sense than the English spellings, considering the way "ch" is pronounced in German, which also makes more sense than the English pronounciation of "ch." Eh, yeah. Why exactly am I telling you this again?