My favorite way to start a voice warm up is with a variety of glides. Try a few below to get your voice started.
Skill-Building - Four-Part Scales (downward)
Beginning with a simple downward 54321 pattern, each of the four parts of this exercise get slightly more complex prior to moving on to the next set of notes. Strive for accuracy with ease.
Skill-Building - Jumps Within A Fifth - Minor (upward)
This exercise moves from the low part of your range to the top. We are staying within a fifth, but making small jumps within the fifth. Pause the recording and try again if you strain or get an uneven sound. Drop off when the exercise gets too high for you.
Skill-Building - Elevator Exercise
This growing two-octave arpeggio is a great way to help your voice learn to transition across the registers variably depending on the phrase length and height. Experiment with different voice qualities in the exercise.
Skill-Building - Minor Pentatonic Scale
Variations on the pentatonic scale are important for contemporary music singers to master. Here is a simple minor pentatonic scale exercise for practice.
Skill-Building - Agility Triplets with Vowel Equalization
This exercise is a two-fer. You are working on achieving fast-paced note changes while at the same time learning to make your vowels sound even.