First drawings on my tablet

The large mosaic piece that I started about a week ago is still work in progress! In the meantime I've been exploring my new drawing app on my Nexus tablet. I've been using the tablet as a sketchbook and drawing what is around me. 

It's alot of fun but quite tricky as I don't have a stylus. I'm using only my finger to draw with which I like to do but the tricky bit is placing the mark in the correct place, no problem for the larger areas but difficult for finer detail. 

I'm a real novice at the moment and these drawings are my first attempts but I'm enjoying experimenting and discovering the possibilities of what might be achieved. 

l'll keep practising and post some more soon :)