Custom pine script for tradingview use

General information for the business: trading
Description of requirements/functionality: need to be able to develop a pine script that will output a histogram to the bottom of the chart, detailing the results of calculations generated by information derived from the chart, multiplied against user-selected ratios (such as fibonacci).
Specific technologies required: pine script
Extra notes: If you are competent in pine script, get in touch with me for more details. thanks