Has anyone had a go at DIY tinting?

I had a go a while ago - turned out fine on the back windows but when I attempted it on the front windows I gave up because the curve in the windows kept causing air bubbles.

Has anyone got any pointers or pictures ? The local Car store had a clearance sale and had film tint for 5 bucks a roll so it was too cheap to pass up. I thought why not have a go!

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1985 190E - Gone
1989 230E - Gone
1995 C200 - Gone
1993 280E 120000KM - Built like a brick, the best one yet