I really like the colors (or colours.  Colours is adorable)

The oranges really work with the green, so I feel this scheme works well. 

And, yeah, trees are difficult if drawing without a reference.  I recommend studying a few specific types (evergreen, birch, maple, willow, etc) and just try it one style at a time until you find something you like.  Also, juniper trees can get pretty wild, and I love how their bark looks.  =P

I really like the colors (or colours.  Colours is adorable)

 

The oranges really work with the green, so I feel this scheme works well. 

 

And, yeah, trees are difficult if drawing without a reference.  I recommend studying a few specific types (evergreen, birch, maple, willow, etc) and just try it one style at a time until you find something you like.  Also, juniper trees can get pretty wild, and I love how their bark looks.  =P

I first learnt the word as 'colours', so colours it will be. =P

Glad to hear that. I do like using some contrasting colours, they make drawings more interesting. ^^

I should really do that. I'd even need some nature studies for my portfolio, should I ever try applying at my local university of arts, but... I am not that good at it, so I often avoid it if possible.