If you have a cosmetology license or esthetician license all you need is a certification day class not 320 hours. 

Licensing is required in the State of Texas.

Already a certified Lash tech?  You are still required to take 320 hours to receive licensing.

Certifications:

Microblading

Eyebrow threading

Lash Perming

Brow Lamination

Volume Lashing

Dermaplaning