phone bike holder for Iphone 6 and lumina 640

My first real design with onshape. After a frind of mine said, This holder is to big and heavy i tried to create this one. Printed standing in one part the challenge was have the up and down look nice.

If you have an other phone please login to Onshape, Make a copy and upload your remix for your phone.

https://cad.onshape.com/documents/544537d5588df7bd1e20fbea/w/c4a53947feff5069f84ebc5e/e/06736afd53122e52454adbb6

If you have any ideas to improve, please give me a comment.