Design a Fingerprint Tree Picture

I want a design of a tree in a format where I can continually customise it. The tree is just to have branches only. (Fingerprints in ink will make up the leaves later - for use at weddings, family tree etc). It would need to be a minimum 300 dpi for printing onto A3 size, and should take up approx 2/3rds of the page. Ideally, I would like it to have 2 birds, with the option for me to add or remove them and add or remove a nest of baby birds as well. I would also like to be able to change the wording and font at the top and the bottom of the design, as well as the colour of the birds and the tree. Please refer to the file attached as a reference. Thanks