Thanks for the kind comments.
To answer some of your questions, the tiller is achieved through very gentle scraping of the horn and the targeted application of heat.
I wasn't going for monster poundage as 40lb is about the max I can shoot with a thumb release. Finger release can be a problem with a short bow like this because the high string angle means a lot of finger pinch.
There's three layers of sinew (red deer) on the bow with the horn laminate (water Buffalo) being around 5mm thick in the bending section of the limb. The glue was a blend of hide glue and Isinglass. The back of the bow has been covered in leather - again, this was bonded with animal glue.
The bow seems fairly fast so long as you're shooting light weight arrows. Being short it's twitchy though and exaggerates any errors in shooting technique.
best regards,
Barney