Appointment illustration - 1st attempt

Hello everyone ! Happy new year 2018.

I'm sharing with you an illustration made during a mission for a client. This one is my first attempt based on the advice of @Justas Galaburda provide through his blog/newsletter.

The idea is to provide to the user a feedback showing him his appointment is shedulled + a sms to confirm.

Since it's my first attempt doing illustration or more complex icon, I'm open to feedback to improve myself in the future.

Hope you like it and have a nice dribbbling session ! ;)